Abstract

We report on a pump-probe investigation of vibrational Raman scattering from coherently excited N2+ ions. It is found that the Raman signals produced by the inelastic scattering of the probe pulse from molecular ions can be dramatically enhanced when the probe laser is resonant with electronic transitions in N2+ ions. The Raman signal can be amplified at 428 nm wavelength due to the presence of population inversion in N2+ ions.

© 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

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    [Crossref] [PubMed]
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    [Crossref]
  30. J. H. Odhner, D. A. Romanov, and R. J. Levis, “Rovibrational wave-packet dispersion during femtosecond laser filamentation in air,” Phys. Rev. Lett. 103(7), 075005 (2009).
    [Crossref] [PubMed]
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2019 (1)

H. Li, M. Hou, H. Zang, Y. Fu, E. Lötstedt, T. Ando, A. Iwasaki, K. Yamanouchi, and H. Xu, “Significant enhancement of N2+ lasing by polarization-modulated ultrashort laser pulses,” Phys. Rev. Lett. 122(1), 013202 (2019).
[Crossref] [PubMed]

2018 (6)

J. Yao, W. Chu, Z. Liu, B. Xu, J. Chen, and Y. Cheng, “Generation of Raman lasers from nitrogen molecular ions driven by ultraintense laser fields,” New J. Phys. 20(3), 033035 (2018).
[Crossref]

Z. Liu, J. Yao, J. Chen, B. Xu, W. Chu, and Y. Cheng, “Near-resonant Raman amplification in the rotational quantum wave packets of nitrogen molecular ions generated by strong field ionization,” Phys. Rev. Lett. 120(8), 083205 (2018).
[Crossref] [PubMed]

Z. Miao, X. Zhong, L. Zhang, W. Zheng, Y. Gao, Y. Liu, H. Jiang, Q. Gong, and C. Wu, “Stimulated-Raman-scattering-assisted superfluorescence enhancement from ionized nitrogen molecules in 800-nm femtosecond laser fields,” Phys. Rev. A 98(3), 033402 (2018).
[Crossref]

B. Xu, S. Jiang, J. Yao, J. Chen, Z. Liu, W. Chu, Y. Wan, F. Zhang, L. Qiao, R. Lu, Y. Cheng, and Z. Xu, “Free-space N2+ lasers generated in strong laser fields: the role of molecular vibration,” Opt. Express 26(10), 13331–13339 (2018).
[Crossref] [PubMed]

M. Britton, P. Laferrière, D. H. Ko, Z. Li, F. Kong, G. Brown, A. Naumov, C. Zhang, L. Arissian, and P. B. Corkum, “Testing the role of recollision in.N2+,” Phys. Rev. Lett. 120(13), 133208 (2018).
[Crossref] [PubMed]

J. Yao, W. Chu, Z. Liu, J. Chen, B. Xu, and Y. Cheng, “An anatomy of strong-field ionization-induced air lasing,” Appl. Phys. B 124(5), 73 (2018).
[Crossref]

2017 (4)

X. Zhong, Z. Miao, L. Zhang, Q. Liang, M. Lei, H. Jiang, Y. Liu, Q. Gong, and C. Wu, “Vibrational and electronic excitation of ionized nitrogen molecules in intense laser fields,” Phys. Rev. A 96(4), 043422 (2017).
[Crossref]

Y. Liu, P. Ding, N. Ibrakovic, S. Bengtsson, S. Chen, R. Danylo, E. R. Simpson, E. W. Larsen, X. Zhang, Z. Fan, A. Houard, J. Mauritsson, A. L’Huillier, C. L. Arnold, S. Zhuang, V. Tikhonchuk, and A. Mysyrowicz, “Unexpected sensitivity of nitrogen ions superradiant emission on pump laser wavelength and duration,” Phys. Rev. Lett. 119(20), 203205 (2017).
[Crossref] [PubMed]

A. Azarm, P. Corkum, and P. Polynkin, “Optical gain in rotationally excited nitrogen molecular ions,” Phys. Rev. A 96(5), 051401 (2017).
[Crossref]

H. Xu, E. Lötstedt, T. Ando, A. Iwasaki, and K. Yamanouchi, “Alignment-dependent population inversion in N2+ in intense few-cycle laser fields,” Phys. Rev. A 96(4), 041401 (2017).

2016 (2)

J. Yao, S. Jiang, W. Chu, B. Zeng, C. Wu, R. Lu, Z. Li, H. Xie, G. Li, C. Yu, Z. Wang, H. Jiang, Q. Gong, and Y. Cheng, “Population redistribution among multiple electronic states of molecular nitrogen ions in strong laser fields,” Phys. Rev. Lett. 116(14), 143007 (2016).
[Crossref] [PubMed]

A. Dogariu and R. B. Miles, “Three-photon femtosecond pumped backwards lasing in argon,” Opt. Express 24(6), A544–A552 (2016).
[Crossref] [PubMed]

2015 (3)

H. Xu, E. Lötstedt, A. Iwasaki, and K. Yamanouchi, “Sub-10-fs population inversion in N2+ in air lasing through multiple state coupling,” Nat. Commun. 6(1), 8347 (2015).
[Crossref] [PubMed]

Y. Liu, P. Ding, G. Lambert, A. Houard, V. Tikhonchuk, and A. Mysyrowicz, “Recollision-induced superradiance of ionized nitrogen molecules,” Phys. Rev. Lett. 115(13), 133203 (2015).
[Crossref] [PubMed]

S. I. Mitryukovskiy, Y. Liu, A. Houard, and A. Mysyrowicz, “Re-evaluation of the peak intensity inside a femtosecond laser filament in air,” J. Phys. B 48(9), 094003 (2015).
[Crossref]

2014 (3)

2013 (3)

D. Kartashov, S. Ališauskas, A. Baltuška, A. Schmitt-Sody, W. Roach, and P. Polynkin, “Remotely pumped stimulated emission at 337 nm in atmospheric nitrogen,” Phys. Rev. A 88(4), 041805 (2013).
[Crossref]

J. Yao, G. Li, C. Jing, B. Zeng, W. Chu, J. Ni, H. Zhang, H. Xie, C. Zhang, H. Li, H. Xu, S. L. Chin, Y. Cheng, and Z. Xu, “Remote creation of coherent emissions in air with two-color ultrafast laser pulses,” New J. Phys. 15(2), 023046 (2013).
[Crossref]

H. Zhang, C. Jing, J. Yao, G. Li, B. Zeng, W. Chu, J. Ni, H. Xie, H. Xu, S. L. Chin, K. Yamanouchi, Y. Cheng, and Z. Xu, “Rotational coherence encoded in an “air-laser” Spectrum of Nitrogen Molecular Ions in an Intense Laser Field,” Phys. Rev. X 3(4), 041009 (2013).
[Crossref]

2012 (2)

D. Kartashov, S. Ališauskas, G. Andriukaitis, A. Pugžlys, M. Shneider, A. Zheltikov, S. L. Chin, and A. Baltuška, “Free-space nitrogen gas laser driven by a femtosecond filament,” Phys. Rev. A 86(3), 033831 (2012).
[Crossref]

M. Bitter, E. A. Shapiro, and V. Milner, “Coherent rovibrational revivals in a thermal molecular ensemble,” Phys. Rev. A 85(4), 043410 (2012).
[Crossref]

2011 (2)

J. Yao, B. Zeng, H. Xu, G. Li, W. Chu, J. Ni, H. Zhang, S. L. Chin, Y. Cheng, and Z. Xu, “High-brightness switchable multi-wavelength remote laser in air,” Phys. Rev. A 84(5), 051802 (2011).
[Crossref]

A. Dogariu, J. B. Michael, M. O. Scully, and R. B. Miles, “High-gain backward lasing in air,” Science 331(6016), 442–445 (2011).
[Crossref] [PubMed]

2009 (1)

J. H. Odhner, D. A. Romanov, and R. J. Levis, “Rovibrational wave-packet dispersion during femtosecond laser filamentation in air,” Phys. Rev. Lett. 103(7), 075005 (2009).
[Crossref] [PubMed]

2003 (1)

Q. Luo, W. Liu, and S. L. Chin, “Lasing action in air induced by ultra-fast laser filamentation,” Appl. Phys. B 76(3), 337–340 (2003).
[Crossref]

1977 (1)

A. Lofthus and P. H. Krupenie, “The spectrum of molecular nitrogen,” J. Phys. Chem. Ref. Data 6(1), 113–307 (1977).
[Crossref]

Ališauskas, S.

D. Kartashov, S. Ališauskas, A. Baltuška, A. Schmitt-Sody, W. Roach, and P. Polynkin, “Remotely pumped stimulated emission at 337 nm in atmospheric nitrogen,” Phys. Rev. A 88(4), 041805 (2013).
[Crossref]

D. Kartashov, S. Ališauskas, G. Andriukaitis, A. Pugžlys, M. Shneider, A. Zheltikov, S. L. Chin, and A. Baltuška, “Free-space nitrogen gas laser driven by a femtosecond filament,” Phys. Rev. A 86(3), 033831 (2012).
[Crossref]

Ando, T.

H. Li, M. Hou, H. Zang, Y. Fu, E. Lötstedt, T. Ando, A. Iwasaki, K. Yamanouchi, and H. Xu, “Significant enhancement of N2+ lasing by polarization-modulated ultrashort laser pulses,” Phys. Rev. Lett. 122(1), 013202 (2019).
[Crossref] [PubMed]

H. Xu, E. Lötstedt, T. Ando, A. Iwasaki, and K. Yamanouchi, “Alignment-dependent population inversion in N2+ in intense few-cycle laser fields,” Phys. Rev. A 96(4), 041401 (2017).

Andriukaitis, G.

D. Kartashov, S. Ališauskas, G. Andriukaitis, A. Pugžlys, M. Shneider, A. Zheltikov, S. L. Chin, and A. Baltuška, “Free-space nitrogen gas laser driven by a femtosecond filament,” Phys. Rev. A 86(3), 033831 (2012).
[Crossref]

Arissian, L.

M. Britton, P. Laferrière, D. H. Ko, Z. Li, F. Kong, G. Brown, A. Naumov, C. Zhang, L. Arissian, and P. B. Corkum, “Testing the role of recollision in.N2+,” Phys. Rev. Lett. 120(13), 133208 (2018).
[Crossref] [PubMed]

Arnold, C. L.

Y. Liu, P. Ding, N. Ibrakovic, S. Bengtsson, S. Chen, R. Danylo, E. R. Simpson, E. W. Larsen, X. Zhang, Z. Fan, A. Houard, J. Mauritsson, A. L’Huillier, C. L. Arnold, S. Zhuang, V. Tikhonchuk, and A. Mysyrowicz, “Unexpected sensitivity of nitrogen ions superradiant emission on pump laser wavelength and duration,” Phys. Rev. Lett. 119(20), 203205 (2017).
[Crossref] [PubMed]

Azarm, A.

A. Azarm, P. Corkum, and P. Polynkin, “Optical gain in rotationally excited nitrogen molecular ions,” Phys. Rev. A 96(5), 051401 (2017).
[Crossref]

Baltuška, A.

D. Kartashov, S. Ališauskas, A. Baltuška, A. Schmitt-Sody, W. Roach, and P. Polynkin, “Remotely pumped stimulated emission at 337 nm in atmospheric nitrogen,” Phys. Rev. A 88(4), 041805 (2013).
[Crossref]

D. Kartashov, S. Ališauskas, G. Andriukaitis, A. Pugžlys, M. Shneider, A. Zheltikov, S. L. Chin, and A. Baltuška, “Free-space nitrogen gas laser driven by a femtosecond filament,” Phys. Rev. A 86(3), 033831 (2012).
[Crossref]

Bengtsson, S.

Y. Liu, P. Ding, N. Ibrakovic, S. Bengtsson, S. Chen, R. Danylo, E. R. Simpson, E. W. Larsen, X. Zhang, Z. Fan, A. Houard, J. Mauritsson, A. L’Huillier, C. L. Arnold, S. Zhuang, V. Tikhonchuk, and A. Mysyrowicz, “Unexpected sensitivity of nitrogen ions superradiant emission on pump laser wavelength and duration,” Phys. Rev. Lett. 119(20), 203205 (2017).
[Crossref] [PubMed]

Bitter, M.

M. Bitter, E. A. Shapiro, and V. Milner, “Coherent rovibrational revivals in a thermal molecular ensemble,” Phys. Rev. A 85(4), 043410 (2012).
[Crossref]

Brelet, Y.

Britton, M.

M. Britton, P. Laferrière, D. H. Ko, Z. Li, F. Kong, G. Brown, A. Naumov, C. Zhang, L. Arissian, and P. B. Corkum, “Testing the role of recollision in.N2+,” Phys. Rev. Lett. 120(13), 133208 (2018).
[Crossref] [PubMed]

Brown, G.

M. Britton, P. Laferrière, D. H. Ko, Z. Li, F. Kong, G. Brown, A. Naumov, C. Zhang, L. Arissian, and P. B. Corkum, “Testing the role of recollision in.N2+,” Phys. Rev. Lett. 120(13), 133208 (2018).
[Crossref] [PubMed]

Chen, J.

J. Yao, W. Chu, Z. Liu, J. Chen, B. Xu, and Y. Cheng, “An anatomy of strong-field ionization-induced air lasing,” Appl. Phys. B 124(5), 73 (2018).
[Crossref]

B. Xu, S. Jiang, J. Yao, J. Chen, Z. Liu, W. Chu, Y. Wan, F. Zhang, L. Qiao, R. Lu, Y. Cheng, and Z. Xu, “Free-space N2+ lasers generated in strong laser fields: the role of molecular vibration,” Opt. Express 26(10), 13331–13339 (2018).
[Crossref] [PubMed]

J. Yao, W. Chu, Z. Liu, B. Xu, J. Chen, and Y. Cheng, “Generation of Raman lasers from nitrogen molecular ions driven by ultraintense laser fields,” New J. Phys. 20(3), 033035 (2018).
[Crossref]

Z. Liu, J. Yao, J. Chen, B. Xu, W. Chu, and Y. Cheng, “Near-resonant Raman amplification in the rotational quantum wave packets of nitrogen molecular ions generated by strong field ionization,” Phys. Rev. Lett. 120(8), 083205 (2018).
[Crossref] [PubMed]

Chen, S.

Y. Liu, P. Ding, N. Ibrakovic, S. Bengtsson, S. Chen, R. Danylo, E. R. Simpson, E. W. Larsen, X. Zhang, Z. Fan, A. Houard, J. Mauritsson, A. L’Huillier, C. L. Arnold, S. Zhuang, V. Tikhonchuk, and A. Mysyrowicz, “Unexpected sensitivity of nitrogen ions superradiant emission on pump laser wavelength and duration,” Phys. Rev. Lett. 119(20), 203205 (2017).
[Crossref] [PubMed]

Cheng, Y.

Z. Liu, J. Yao, J. Chen, B. Xu, W. Chu, and Y. Cheng, “Near-resonant Raman amplification in the rotational quantum wave packets of nitrogen molecular ions generated by strong field ionization,” Phys. Rev. Lett. 120(8), 083205 (2018).
[Crossref] [PubMed]

J. Yao, W. Chu, Z. Liu, B. Xu, J. Chen, and Y. Cheng, “Generation of Raman lasers from nitrogen molecular ions driven by ultraintense laser fields,” New J. Phys. 20(3), 033035 (2018).
[Crossref]

B. Xu, S. Jiang, J. Yao, J. Chen, Z. Liu, W. Chu, Y. Wan, F. Zhang, L. Qiao, R. Lu, Y. Cheng, and Z. Xu, “Free-space N2+ lasers generated in strong laser fields: the role of molecular vibration,” Opt. Express 26(10), 13331–13339 (2018).
[Crossref] [PubMed]

J. Yao, W. Chu, Z. Liu, J. Chen, B. Xu, and Y. Cheng, “An anatomy of strong-field ionization-induced air lasing,” Appl. Phys. B 124(5), 73 (2018).
[Crossref]

J. Yao, S. Jiang, W. Chu, B. Zeng, C. Wu, R. Lu, Z. Li, H. Xie, G. Li, C. Yu, Z. Wang, H. Jiang, Q. Gong, and Y. Cheng, “Population redistribution among multiple electronic states of molecular nitrogen ions in strong laser fields,” Phys. Rev. Lett. 116(14), 143007 (2016).
[Crossref] [PubMed]

H. Zhang, C. Jing, J. Yao, G. Li, B. Zeng, W. Chu, J. Ni, H. Xie, H. Xu, S. L. Chin, K. Yamanouchi, Y. Cheng, and Z. Xu, “Rotational coherence encoded in an “air-laser” Spectrum of Nitrogen Molecular Ions in an Intense Laser Field,” Phys. Rev. X 3(4), 041009 (2013).
[Crossref]

J. Yao, G. Li, C. Jing, B. Zeng, W. Chu, J. Ni, H. Zhang, H. Xie, C. Zhang, H. Li, H. Xu, S. L. Chin, Y. Cheng, and Z. Xu, “Remote creation of coherent emissions in air with two-color ultrafast laser pulses,” New J. Phys. 15(2), 023046 (2013).
[Crossref]

J. Yao, B. Zeng, H. Xu, G. Li, W. Chu, J. Ni, H. Zhang, S. L. Chin, Y. Cheng, and Z. Xu, “High-brightness switchable multi-wavelength remote laser in air,” Phys. Rev. A 84(5), 051802 (2011).
[Crossref]

Chin, S. L.

J. Yao, G. Li, C. Jing, B. Zeng, W. Chu, J. Ni, H. Zhang, H. Xie, C. Zhang, H. Li, H. Xu, S. L. Chin, Y. Cheng, and Z. Xu, “Remote creation of coherent emissions in air with two-color ultrafast laser pulses,” New J. Phys. 15(2), 023046 (2013).
[Crossref]

H. Zhang, C. Jing, J. Yao, G. Li, B. Zeng, W. Chu, J. Ni, H. Xie, H. Xu, S. L. Chin, K. Yamanouchi, Y. Cheng, and Z. Xu, “Rotational coherence encoded in an “air-laser” Spectrum of Nitrogen Molecular Ions in an Intense Laser Field,” Phys. Rev. X 3(4), 041009 (2013).
[Crossref]

D. Kartashov, S. Ališauskas, G. Andriukaitis, A. Pugžlys, M. Shneider, A. Zheltikov, S. L. Chin, and A. Baltuška, “Free-space nitrogen gas laser driven by a femtosecond filament,” Phys. Rev. A 86(3), 033831 (2012).
[Crossref]

J. Yao, B. Zeng, H. Xu, G. Li, W. Chu, J. Ni, H. Zhang, S. L. Chin, Y. Cheng, and Z. Xu, “High-brightness switchable multi-wavelength remote laser in air,” Phys. Rev. A 84(5), 051802 (2011).
[Crossref]

Q. Luo, W. Liu, and S. L. Chin, “Lasing action in air induced by ultra-fast laser filamentation,” Appl. Phys. B 76(3), 337–340 (2003).
[Crossref]

Chu, W.

J. Yao, W. Chu, Z. Liu, J. Chen, B. Xu, and Y. Cheng, “An anatomy of strong-field ionization-induced air lasing,” Appl. Phys. B 124(5), 73 (2018).
[Crossref]

B. Xu, S. Jiang, J. Yao, J. Chen, Z. Liu, W. Chu, Y. Wan, F. Zhang, L. Qiao, R. Lu, Y. Cheng, and Z. Xu, “Free-space N2+ lasers generated in strong laser fields: the role of molecular vibration,” Opt. Express 26(10), 13331–13339 (2018).
[Crossref] [PubMed]

Z. Liu, J. Yao, J. Chen, B. Xu, W. Chu, and Y. Cheng, “Near-resonant Raman amplification in the rotational quantum wave packets of nitrogen molecular ions generated by strong field ionization,” Phys. Rev. Lett. 120(8), 083205 (2018).
[Crossref] [PubMed]

J. Yao, W. Chu, Z. Liu, B. Xu, J. Chen, and Y. Cheng, “Generation of Raman lasers from nitrogen molecular ions driven by ultraintense laser fields,” New J. Phys. 20(3), 033035 (2018).
[Crossref]

J. Yao, S. Jiang, W. Chu, B. Zeng, C. Wu, R. Lu, Z. Li, H. Xie, G. Li, C. Yu, Z. Wang, H. Jiang, Q. Gong, and Y. Cheng, “Population redistribution among multiple electronic states of molecular nitrogen ions in strong laser fields,” Phys. Rev. Lett. 116(14), 143007 (2016).
[Crossref] [PubMed]

J. Yao, G. Li, C. Jing, B. Zeng, W. Chu, J. Ni, H. Zhang, H. Xie, C. Zhang, H. Li, H. Xu, S. L. Chin, Y. Cheng, and Z. Xu, “Remote creation of coherent emissions in air with two-color ultrafast laser pulses,” New J. Phys. 15(2), 023046 (2013).
[Crossref]

H. Zhang, C. Jing, J. Yao, G. Li, B. Zeng, W. Chu, J. Ni, H. Xie, H. Xu, S. L. Chin, K. Yamanouchi, Y. Cheng, and Z. Xu, “Rotational coherence encoded in an “air-laser” Spectrum of Nitrogen Molecular Ions in an Intense Laser Field,” Phys. Rev. X 3(4), 041009 (2013).
[Crossref]

J. Yao, B. Zeng, H. Xu, G. Li, W. Chu, J. Ni, H. Zhang, S. L. Chin, Y. Cheng, and Z. Xu, “High-brightness switchable multi-wavelength remote laser in air,” Phys. Rev. A 84(5), 051802 (2011).
[Crossref]

Corkum, P.

A. Azarm, P. Corkum, and P. Polynkin, “Optical gain in rotationally excited nitrogen molecular ions,” Phys. Rev. A 96(5), 051401 (2017).
[Crossref]

Corkum, P. B.

M. Britton, P. Laferrière, D. H. Ko, Z. Li, F. Kong, G. Brown, A. Naumov, C. Zhang, L. Arissian, and P. B. Corkum, “Testing the role of recollision in.N2+,” Phys. Rev. Lett. 120(13), 133208 (2018).
[Crossref] [PubMed]

Danylo, R.

Y. Liu, P. Ding, N. Ibrakovic, S. Bengtsson, S. Chen, R. Danylo, E. R. Simpson, E. W. Larsen, X. Zhang, Z. Fan, A. Houard, J. Mauritsson, A. L’Huillier, C. L. Arnold, S. Zhuang, V. Tikhonchuk, and A. Mysyrowicz, “Unexpected sensitivity of nitrogen ions superradiant emission on pump laser wavelength and duration,” Phys. Rev. Lett. 119(20), 203205 (2017).
[Crossref] [PubMed]

Ding, P.

Y. Liu, P. Ding, N. Ibrakovic, S. Bengtsson, S. Chen, R. Danylo, E. R. Simpson, E. W. Larsen, X. Zhang, Z. Fan, A. Houard, J. Mauritsson, A. L’Huillier, C. L. Arnold, S. Zhuang, V. Tikhonchuk, and A. Mysyrowicz, “Unexpected sensitivity of nitrogen ions superradiant emission on pump laser wavelength and duration,” Phys. Rev. Lett. 119(20), 203205 (2017).
[Crossref] [PubMed]

Y. Liu, P. Ding, G. Lambert, A. Houard, V. Tikhonchuk, and A. Mysyrowicz, “Recollision-induced superradiance of ionized nitrogen molecules,” Phys. Rev. Lett. 115(13), 133203 (2015).
[Crossref] [PubMed]

G. Point, Y. Liu, Y. Brelet, S. Mitryukovskiy, P. Ding, A. Houard, and A. Mysyrowicz, “Lasing of ambient air with microjoule pulse energy pumped by a multi-terawatt infrared femtosecond laser,” Opt. Lett. 39(7), 1725–1728 (2014).
[Crossref] [PubMed]

S. Mitryukovskiy, Y. Liu, P. Ding, A. Houard, and A. Mysyrowicz, “Backward stimulated radiation from filaments in nitrogen gas and air pumped by circularly polarized 800 nm femtosecond laser pulses,” Opt. Express 22(11), 12750–12759 (2014).
[Crossref] [PubMed]

Dogariu, A.

A. Dogariu and R. B. Miles, “Three-photon femtosecond pumped backwards lasing in argon,” Opt. Express 24(6), A544–A552 (2016).
[Crossref] [PubMed]

A. Dogariu, J. B. Michael, M. O. Scully, and R. B. Miles, “High-gain backward lasing in air,” Science 331(6016), 442–445 (2011).
[Crossref] [PubMed]

Fan, Z.

Y. Liu, P. Ding, N. Ibrakovic, S. Bengtsson, S. Chen, R. Danylo, E. R. Simpson, E. W. Larsen, X. Zhang, Z. Fan, A. Houard, J. Mauritsson, A. L’Huillier, C. L. Arnold, S. Zhuang, V. Tikhonchuk, and A. Mysyrowicz, “Unexpected sensitivity of nitrogen ions superradiant emission on pump laser wavelength and duration,” Phys. Rev. Lett. 119(20), 203205 (2017).
[Crossref] [PubMed]

Fu, Y.

H. Li, M. Hou, H. Zang, Y. Fu, E. Lötstedt, T. Ando, A. Iwasaki, K. Yamanouchi, and H. Xu, “Significant enhancement of N2+ lasing by polarization-modulated ultrashort laser pulses,” Phys. Rev. Lett. 122(1), 013202 (2019).
[Crossref] [PubMed]

Gao, Y.

Z. Miao, X. Zhong, L. Zhang, W. Zheng, Y. Gao, Y. Liu, H. Jiang, Q. Gong, and C. Wu, “Stimulated-Raman-scattering-assisted superfluorescence enhancement from ionized nitrogen molecules in 800-nm femtosecond laser fields,” Phys. Rev. A 98(3), 033402 (2018).
[Crossref]

Gong, Q.

Z. Miao, X. Zhong, L. Zhang, W. Zheng, Y. Gao, Y. Liu, H. Jiang, Q. Gong, and C. Wu, “Stimulated-Raman-scattering-assisted superfluorescence enhancement from ionized nitrogen molecules in 800-nm femtosecond laser fields,” Phys. Rev. A 98(3), 033402 (2018).
[Crossref]

X. Zhong, Z. Miao, L. Zhang, Q. Liang, M. Lei, H. Jiang, Y. Liu, Q. Gong, and C. Wu, “Vibrational and electronic excitation of ionized nitrogen molecules in intense laser fields,” Phys. Rev. A 96(4), 043422 (2017).
[Crossref]

J. Yao, S. Jiang, W. Chu, B. Zeng, C. Wu, R. Lu, Z. Li, H. Xie, G. Li, C. Yu, Z. Wang, H. Jiang, Q. Gong, and Y. Cheng, “Population redistribution among multiple electronic states of molecular nitrogen ions in strong laser fields,” Phys. Rev. Lett. 116(14), 143007 (2016).
[Crossref] [PubMed]

Hou, M.

H. Li, M. Hou, H. Zang, Y. Fu, E. Lötstedt, T. Ando, A. Iwasaki, K. Yamanouchi, and H. Xu, “Significant enhancement of N2+ lasing by polarization-modulated ultrashort laser pulses,” Phys. Rev. Lett. 122(1), 013202 (2019).
[Crossref] [PubMed]

Houard, A.

Y. Liu, P. Ding, N. Ibrakovic, S. Bengtsson, S. Chen, R. Danylo, E. R. Simpson, E. W. Larsen, X. Zhang, Z. Fan, A. Houard, J. Mauritsson, A. L’Huillier, C. L. Arnold, S. Zhuang, V. Tikhonchuk, and A. Mysyrowicz, “Unexpected sensitivity of nitrogen ions superradiant emission on pump laser wavelength and duration,” Phys. Rev. Lett. 119(20), 203205 (2017).
[Crossref] [PubMed]

S. I. Mitryukovskiy, Y. Liu, A. Houard, and A. Mysyrowicz, “Re-evaluation of the peak intensity inside a femtosecond laser filament in air,” J. Phys. B 48(9), 094003 (2015).
[Crossref]

Y. Liu, P. Ding, G. Lambert, A. Houard, V. Tikhonchuk, and A. Mysyrowicz, “Recollision-induced superradiance of ionized nitrogen molecules,” Phys. Rev. Lett. 115(13), 133203 (2015).
[Crossref] [PubMed]

G. Point, Y. Liu, Y. Brelet, S. Mitryukovskiy, P. Ding, A. Houard, and A. Mysyrowicz, “Lasing of ambient air with microjoule pulse energy pumped by a multi-terawatt infrared femtosecond laser,” Opt. Lett. 39(7), 1725–1728 (2014).
[Crossref] [PubMed]

S. Mitryukovskiy, Y. Liu, P. Ding, A. Houard, and A. Mysyrowicz, “Backward stimulated radiation from filaments in nitrogen gas and air pumped by circularly polarized 800 nm femtosecond laser pulses,” Opt. Express 22(11), 12750–12759 (2014).
[Crossref] [PubMed]

Ibrakovic, N.

Y. Liu, P. Ding, N. Ibrakovic, S. Bengtsson, S. Chen, R. Danylo, E. R. Simpson, E. W. Larsen, X. Zhang, Z. Fan, A. Houard, J. Mauritsson, A. L’Huillier, C. L. Arnold, S. Zhuang, V. Tikhonchuk, and A. Mysyrowicz, “Unexpected sensitivity of nitrogen ions superradiant emission on pump laser wavelength and duration,” Phys. Rev. Lett. 119(20), 203205 (2017).
[Crossref] [PubMed]

Iwasaki, A.

H. Li, M. Hou, H. Zang, Y. Fu, E. Lötstedt, T. Ando, A. Iwasaki, K. Yamanouchi, and H. Xu, “Significant enhancement of N2+ lasing by polarization-modulated ultrashort laser pulses,” Phys. Rev. Lett. 122(1), 013202 (2019).
[Crossref] [PubMed]

H. Xu, E. Lötstedt, T. Ando, A. Iwasaki, and K. Yamanouchi, “Alignment-dependent population inversion in N2+ in intense few-cycle laser fields,” Phys. Rev. A 96(4), 041401 (2017).

H. Xu, E. Lötstedt, A. Iwasaki, and K. Yamanouchi, “Sub-10-fs population inversion in N2+ in air lasing through multiple state coupling,” Nat. Commun. 6(1), 8347 (2015).
[Crossref] [PubMed]

Jiang, H.

Z. Miao, X. Zhong, L. Zhang, W. Zheng, Y. Gao, Y. Liu, H. Jiang, Q. Gong, and C. Wu, “Stimulated-Raman-scattering-assisted superfluorescence enhancement from ionized nitrogen molecules in 800-nm femtosecond laser fields,” Phys. Rev. A 98(3), 033402 (2018).
[Crossref]

X. Zhong, Z. Miao, L. Zhang, Q. Liang, M. Lei, H. Jiang, Y. Liu, Q. Gong, and C. Wu, “Vibrational and electronic excitation of ionized nitrogen molecules in intense laser fields,” Phys. Rev. A 96(4), 043422 (2017).
[Crossref]

J. Yao, S. Jiang, W. Chu, B. Zeng, C. Wu, R. Lu, Z. Li, H. Xie, G. Li, C. Yu, Z. Wang, H. Jiang, Q. Gong, and Y. Cheng, “Population redistribution among multiple electronic states of molecular nitrogen ions in strong laser fields,” Phys. Rev. Lett. 116(14), 143007 (2016).
[Crossref] [PubMed]

Jiang, S.

B. Xu, S. Jiang, J. Yao, J. Chen, Z. Liu, W. Chu, Y. Wan, F. Zhang, L. Qiao, R. Lu, Y. Cheng, and Z. Xu, “Free-space N2+ lasers generated in strong laser fields: the role of molecular vibration,” Opt. Express 26(10), 13331–13339 (2018).
[Crossref] [PubMed]

J. Yao, S. Jiang, W. Chu, B. Zeng, C. Wu, R. Lu, Z. Li, H. Xie, G. Li, C. Yu, Z. Wang, H. Jiang, Q. Gong, and Y. Cheng, “Population redistribution among multiple electronic states of molecular nitrogen ions in strong laser fields,” Phys. Rev. Lett. 116(14), 143007 (2016).
[Crossref] [PubMed]

Jing, C.

H. Zhang, C. Jing, J. Yao, G. Li, B. Zeng, W. Chu, J. Ni, H. Xie, H. Xu, S. L. Chin, K. Yamanouchi, Y. Cheng, and Z. Xu, “Rotational coherence encoded in an “air-laser” Spectrum of Nitrogen Molecular Ions in an Intense Laser Field,” Phys. Rev. X 3(4), 041009 (2013).
[Crossref]

J. Yao, G. Li, C. Jing, B. Zeng, W. Chu, J. Ni, H. Zhang, H. Xie, C. Zhang, H. Li, H. Xu, S. L. Chin, Y. Cheng, and Z. Xu, “Remote creation of coherent emissions in air with two-color ultrafast laser pulses,” New J. Phys. 15(2), 023046 (2013).
[Crossref]

Kartashov, D.

D. Kartashov, S. Ališauskas, A. Baltuška, A. Schmitt-Sody, W. Roach, and P. Polynkin, “Remotely pumped stimulated emission at 337 nm in atmospheric nitrogen,” Phys. Rev. A 88(4), 041805 (2013).
[Crossref]

D. Kartashov, S. Ališauskas, G. Andriukaitis, A. Pugžlys, M. Shneider, A. Zheltikov, S. L. Chin, and A. Baltuška, “Free-space nitrogen gas laser driven by a femtosecond filament,” Phys. Rev. A 86(3), 033831 (2012).
[Crossref]

Ko, D. H.

M. Britton, P. Laferrière, D. H. Ko, Z. Li, F. Kong, G. Brown, A. Naumov, C. Zhang, L. Arissian, and P. B. Corkum, “Testing the role of recollision in.N2+,” Phys. Rev. Lett. 120(13), 133208 (2018).
[Crossref] [PubMed]

Kong, F.

M. Britton, P. Laferrière, D. H. Ko, Z. Li, F. Kong, G. Brown, A. Naumov, C. Zhang, L. Arissian, and P. B. Corkum, “Testing the role of recollision in.N2+,” Phys. Rev. Lett. 120(13), 133208 (2018).
[Crossref] [PubMed]

Krupenie, P. H.

A. Lofthus and P. H. Krupenie, “The spectrum of molecular nitrogen,” J. Phys. Chem. Ref. Data 6(1), 113–307 (1977).
[Crossref]

L’Huillier, A.

Y. Liu, P. Ding, N. Ibrakovic, S. Bengtsson, S. Chen, R. Danylo, E. R. Simpson, E. W. Larsen, X. Zhang, Z. Fan, A. Houard, J. Mauritsson, A. L’Huillier, C. L. Arnold, S. Zhuang, V. Tikhonchuk, and A. Mysyrowicz, “Unexpected sensitivity of nitrogen ions superradiant emission on pump laser wavelength and duration,” Phys. Rev. Lett. 119(20), 203205 (2017).
[Crossref] [PubMed]

Laferrière, P.

M. Britton, P. Laferrière, D. H. Ko, Z. Li, F. Kong, G. Brown, A. Naumov, C. Zhang, L. Arissian, and P. B. Corkum, “Testing the role of recollision in.N2+,” Phys. Rev. Lett. 120(13), 133208 (2018).
[Crossref] [PubMed]

Lambert, G.

Y. Liu, P. Ding, G. Lambert, A. Houard, V. Tikhonchuk, and A. Mysyrowicz, “Recollision-induced superradiance of ionized nitrogen molecules,” Phys. Rev. Lett. 115(13), 133203 (2015).
[Crossref] [PubMed]

Larsen, E. W.

Y. Liu, P. Ding, N. Ibrakovic, S. Bengtsson, S. Chen, R. Danylo, E. R. Simpson, E. W. Larsen, X. Zhang, Z. Fan, A. Houard, J. Mauritsson, A. L’Huillier, C. L. Arnold, S. Zhuang, V. Tikhonchuk, and A. Mysyrowicz, “Unexpected sensitivity of nitrogen ions superradiant emission on pump laser wavelength and duration,” Phys. Rev. Lett. 119(20), 203205 (2017).
[Crossref] [PubMed]

Laurain, A.

A. Laurain, M. Scheller, and P. Polynkin, “Low-threshold bidirectional air lasing,” Phys. Rev. Lett. 113(25), 253901 (2014).
[Crossref] [PubMed]

Lei, M.

X. Zhong, Z. Miao, L. Zhang, Q. Liang, M. Lei, H. Jiang, Y. Liu, Q. Gong, and C. Wu, “Vibrational and electronic excitation of ionized nitrogen molecules in intense laser fields,” Phys. Rev. A 96(4), 043422 (2017).
[Crossref]

Levis, R. J.

J. H. Odhner, D. A. Romanov, and R. J. Levis, “Rovibrational wave-packet dispersion during femtosecond laser filamentation in air,” Phys. Rev. Lett. 103(7), 075005 (2009).
[Crossref] [PubMed]

Li, G.

J. Yao, S. Jiang, W. Chu, B. Zeng, C. Wu, R. Lu, Z. Li, H. Xie, G. Li, C. Yu, Z. Wang, H. Jiang, Q. Gong, and Y. Cheng, “Population redistribution among multiple electronic states of molecular nitrogen ions in strong laser fields,” Phys. Rev. Lett. 116(14), 143007 (2016).
[Crossref] [PubMed]

J. Yao, G. Li, C. Jing, B. Zeng, W. Chu, J. Ni, H. Zhang, H. Xie, C. Zhang, H. Li, H. Xu, S. L. Chin, Y. Cheng, and Z. Xu, “Remote creation of coherent emissions in air with two-color ultrafast laser pulses,” New J. Phys. 15(2), 023046 (2013).
[Crossref]

H. Zhang, C. Jing, J. Yao, G. Li, B. Zeng, W. Chu, J. Ni, H. Xie, H. Xu, S. L. Chin, K. Yamanouchi, Y. Cheng, and Z. Xu, “Rotational coherence encoded in an “air-laser” Spectrum of Nitrogen Molecular Ions in an Intense Laser Field,” Phys. Rev. X 3(4), 041009 (2013).
[Crossref]

J. Yao, B. Zeng, H. Xu, G. Li, W. Chu, J. Ni, H. Zhang, S. L. Chin, Y. Cheng, and Z. Xu, “High-brightness switchable multi-wavelength remote laser in air,” Phys. Rev. A 84(5), 051802 (2011).
[Crossref]

Li, H.

H. Li, M. Hou, H. Zang, Y. Fu, E. Lötstedt, T. Ando, A. Iwasaki, K. Yamanouchi, and H. Xu, “Significant enhancement of N2+ lasing by polarization-modulated ultrashort laser pulses,” Phys. Rev. Lett. 122(1), 013202 (2019).
[Crossref] [PubMed]

J. Yao, G. Li, C. Jing, B. Zeng, W. Chu, J. Ni, H. Zhang, H. Xie, C. Zhang, H. Li, H. Xu, S. L. Chin, Y. Cheng, and Z. Xu, “Remote creation of coherent emissions in air with two-color ultrafast laser pulses,” New J. Phys. 15(2), 023046 (2013).
[Crossref]

Li, Z.

M. Britton, P. Laferrière, D. H. Ko, Z. Li, F. Kong, G. Brown, A. Naumov, C. Zhang, L. Arissian, and P. B. Corkum, “Testing the role of recollision in.N2+,” Phys. Rev. Lett. 120(13), 133208 (2018).
[Crossref] [PubMed]

J. Yao, S. Jiang, W. Chu, B. Zeng, C. Wu, R. Lu, Z. Li, H. Xie, G. Li, C. Yu, Z. Wang, H. Jiang, Q. Gong, and Y. Cheng, “Population redistribution among multiple electronic states of molecular nitrogen ions in strong laser fields,” Phys. Rev. Lett. 116(14), 143007 (2016).
[Crossref] [PubMed]

Liang, Q.

X. Zhong, Z. Miao, L. Zhang, Q. Liang, M. Lei, H. Jiang, Y. Liu, Q. Gong, and C. Wu, “Vibrational and electronic excitation of ionized nitrogen molecules in intense laser fields,” Phys. Rev. A 96(4), 043422 (2017).
[Crossref]

Liu, W.

Q. Luo, W. Liu, and S. L. Chin, “Lasing action in air induced by ultra-fast laser filamentation,” Appl. Phys. B 76(3), 337–340 (2003).
[Crossref]

Liu, Y.

Z. Miao, X. Zhong, L. Zhang, W. Zheng, Y. Gao, Y. Liu, H. Jiang, Q. Gong, and C. Wu, “Stimulated-Raman-scattering-assisted superfluorescence enhancement from ionized nitrogen molecules in 800-nm femtosecond laser fields,” Phys. Rev. A 98(3), 033402 (2018).
[Crossref]

Y. Liu, P. Ding, N. Ibrakovic, S. Bengtsson, S. Chen, R. Danylo, E. R. Simpson, E. W. Larsen, X. Zhang, Z. Fan, A. Houard, J. Mauritsson, A. L’Huillier, C. L. Arnold, S. Zhuang, V. Tikhonchuk, and A. Mysyrowicz, “Unexpected sensitivity of nitrogen ions superradiant emission on pump laser wavelength and duration,” Phys. Rev. Lett. 119(20), 203205 (2017).
[Crossref] [PubMed]

X. Zhong, Z. Miao, L. Zhang, Q. Liang, M. Lei, H. Jiang, Y. Liu, Q. Gong, and C. Wu, “Vibrational and electronic excitation of ionized nitrogen molecules in intense laser fields,” Phys. Rev. A 96(4), 043422 (2017).
[Crossref]

Y. Liu, P. Ding, G. Lambert, A. Houard, V. Tikhonchuk, and A. Mysyrowicz, “Recollision-induced superradiance of ionized nitrogen molecules,” Phys. Rev. Lett. 115(13), 133203 (2015).
[Crossref] [PubMed]

S. I. Mitryukovskiy, Y. Liu, A. Houard, and A. Mysyrowicz, “Re-evaluation of the peak intensity inside a femtosecond laser filament in air,” J. Phys. B 48(9), 094003 (2015).
[Crossref]

S. Mitryukovskiy, Y. Liu, P. Ding, A. Houard, and A. Mysyrowicz, “Backward stimulated radiation from filaments in nitrogen gas and air pumped by circularly polarized 800 nm femtosecond laser pulses,” Opt. Express 22(11), 12750–12759 (2014).
[Crossref] [PubMed]

G. Point, Y. Liu, Y. Brelet, S. Mitryukovskiy, P. Ding, A. Houard, and A. Mysyrowicz, “Lasing of ambient air with microjoule pulse energy pumped by a multi-terawatt infrared femtosecond laser,” Opt. Lett. 39(7), 1725–1728 (2014).
[Crossref] [PubMed]

Liu, Z.

J. Yao, W. Chu, Z. Liu, J. Chen, B. Xu, and Y. Cheng, “An anatomy of strong-field ionization-induced air lasing,” Appl. Phys. B 124(5), 73 (2018).
[Crossref]

B. Xu, S. Jiang, J. Yao, J. Chen, Z. Liu, W. Chu, Y. Wan, F. Zhang, L. Qiao, R. Lu, Y. Cheng, and Z. Xu, “Free-space N2+ lasers generated in strong laser fields: the role of molecular vibration,” Opt. Express 26(10), 13331–13339 (2018).
[Crossref] [PubMed]

J. Yao, W. Chu, Z. Liu, B. Xu, J. Chen, and Y. Cheng, “Generation of Raman lasers from nitrogen molecular ions driven by ultraintense laser fields,” New J. Phys. 20(3), 033035 (2018).
[Crossref]

Z. Liu, J. Yao, J. Chen, B. Xu, W. Chu, and Y. Cheng, “Near-resonant Raman amplification in the rotational quantum wave packets of nitrogen molecular ions generated by strong field ionization,” Phys. Rev. Lett. 120(8), 083205 (2018).
[Crossref] [PubMed]

Lofthus, A.

A. Lofthus and P. H. Krupenie, “The spectrum of molecular nitrogen,” J. Phys. Chem. Ref. Data 6(1), 113–307 (1977).
[Crossref]

Lötstedt, E.

H. Li, M. Hou, H. Zang, Y. Fu, E. Lötstedt, T. Ando, A. Iwasaki, K. Yamanouchi, and H. Xu, “Significant enhancement of N2+ lasing by polarization-modulated ultrashort laser pulses,” Phys. Rev. Lett. 122(1), 013202 (2019).
[Crossref] [PubMed]

H. Xu, E. Lötstedt, T. Ando, A. Iwasaki, and K. Yamanouchi, “Alignment-dependent population inversion in N2+ in intense few-cycle laser fields,” Phys. Rev. A 96(4), 041401 (2017).

H. Xu, E. Lötstedt, A. Iwasaki, and K. Yamanouchi, “Sub-10-fs population inversion in N2+ in air lasing through multiple state coupling,” Nat. Commun. 6(1), 8347 (2015).
[Crossref] [PubMed]

Lu, R.

B. Xu, S. Jiang, J. Yao, J. Chen, Z. Liu, W. Chu, Y. Wan, F. Zhang, L. Qiao, R. Lu, Y. Cheng, and Z. Xu, “Free-space N2+ lasers generated in strong laser fields: the role of molecular vibration,” Opt. Express 26(10), 13331–13339 (2018).
[Crossref] [PubMed]

J. Yao, S. Jiang, W. Chu, B. Zeng, C. Wu, R. Lu, Z. Li, H. Xie, G. Li, C. Yu, Z. Wang, H. Jiang, Q. Gong, and Y. Cheng, “Population redistribution among multiple electronic states of molecular nitrogen ions in strong laser fields,” Phys. Rev. Lett. 116(14), 143007 (2016).
[Crossref] [PubMed]

Luo, Q.

Q. Luo, W. Liu, and S. L. Chin, “Lasing action in air induced by ultra-fast laser filamentation,” Appl. Phys. B 76(3), 337–340 (2003).
[Crossref]

Mauritsson, J.

Y. Liu, P. Ding, N. Ibrakovic, S. Bengtsson, S. Chen, R. Danylo, E. R. Simpson, E. W. Larsen, X. Zhang, Z. Fan, A. Houard, J. Mauritsson, A. L’Huillier, C. L. Arnold, S. Zhuang, V. Tikhonchuk, and A. Mysyrowicz, “Unexpected sensitivity of nitrogen ions superradiant emission on pump laser wavelength and duration,” Phys. Rev. Lett. 119(20), 203205 (2017).
[Crossref] [PubMed]

Miao, Z.

Z. Miao, X. Zhong, L. Zhang, W. Zheng, Y. Gao, Y. Liu, H. Jiang, Q. Gong, and C. Wu, “Stimulated-Raman-scattering-assisted superfluorescence enhancement from ionized nitrogen molecules in 800-nm femtosecond laser fields,” Phys. Rev. A 98(3), 033402 (2018).
[Crossref]

X. Zhong, Z. Miao, L. Zhang, Q. Liang, M. Lei, H. Jiang, Y. Liu, Q. Gong, and C. Wu, “Vibrational and electronic excitation of ionized nitrogen molecules in intense laser fields,” Phys. Rev. A 96(4), 043422 (2017).
[Crossref]

Michael, J. B.

A. Dogariu, J. B. Michael, M. O. Scully, and R. B. Miles, “High-gain backward lasing in air,” Science 331(6016), 442–445 (2011).
[Crossref] [PubMed]

Miles, R. B.

A. Dogariu and R. B. Miles, “Three-photon femtosecond pumped backwards lasing in argon,” Opt. Express 24(6), A544–A552 (2016).
[Crossref] [PubMed]

A. Dogariu, J. B. Michael, M. O. Scully, and R. B. Miles, “High-gain backward lasing in air,” Science 331(6016), 442–445 (2011).
[Crossref] [PubMed]

Milner, V.

M. Bitter, E. A. Shapiro, and V. Milner, “Coherent rovibrational revivals in a thermal molecular ensemble,” Phys. Rev. A 85(4), 043410 (2012).
[Crossref]

Mitryukovskiy, S.

Mitryukovskiy, S. I.

S. I. Mitryukovskiy, Y. Liu, A. Houard, and A. Mysyrowicz, “Re-evaluation of the peak intensity inside a femtosecond laser filament in air,” J. Phys. B 48(9), 094003 (2015).
[Crossref]

Mysyrowicz, A.

Y. Liu, P. Ding, N. Ibrakovic, S. Bengtsson, S. Chen, R. Danylo, E. R. Simpson, E. W. Larsen, X. Zhang, Z. Fan, A. Houard, J. Mauritsson, A. L’Huillier, C. L. Arnold, S. Zhuang, V. Tikhonchuk, and A. Mysyrowicz, “Unexpected sensitivity of nitrogen ions superradiant emission on pump laser wavelength and duration,” Phys. Rev. Lett. 119(20), 203205 (2017).
[Crossref] [PubMed]

S. I. Mitryukovskiy, Y. Liu, A. Houard, and A. Mysyrowicz, “Re-evaluation of the peak intensity inside a femtosecond laser filament in air,” J. Phys. B 48(9), 094003 (2015).
[Crossref]

Y. Liu, P. Ding, G. Lambert, A. Houard, V. Tikhonchuk, and A. Mysyrowicz, “Recollision-induced superradiance of ionized nitrogen molecules,” Phys. Rev. Lett. 115(13), 133203 (2015).
[Crossref] [PubMed]

G. Point, Y. Liu, Y. Brelet, S. Mitryukovskiy, P. Ding, A. Houard, and A. Mysyrowicz, “Lasing of ambient air with microjoule pulse energy pumped by a multi-terawatt infrared femtosecond laser,” Opt. Lett. 39(7), 1725–1728 (2014).
[Crossref] [PubMed]

S. Mitryukovskiy, Y. Liu, P. Ding, A. Houard, and A. Mysyrowicz, “Backward stimulated radiation from filaments in nitrogen gas and air pumped by circularly polarized 800 nm femtosecond laser pulses,” Opt. Express 22(11), 12750–12759 (2014).
[Crossref] [PubMed]

Naumov, A.

M. Britton, P. Laferrière, D. H. Ko, Z. Li, F. Kong, G. Brown, A. Naumov, C. Zhang, L. Arissian, and P. B. Corkum, “Testing the role of recollision in.N2+,” Phys. Rev. Lett. 120(13), 133208 (2018).
[Crossref] [PubMed]

Ni, J.

H. Zhang, C. Jing, J. Yao, G. Li, B. Zeng, W. Chu, J. Ni, H. Xie, H. Xu, S. L. Chin, K. Yamanouchi, Y. Cheng, and Z. Xu, “Rotational coherence encoded in an “air-laser” Spectrum of Nitrogen Molecular Ions in an Intense Laser Field,” Phys. Rev. X 3(4), 041009 (2013).
[Crossref]

J. Yao, G. Li, C. Jing, B. Zeng, W. Chu, J. Ni, H. Zhang, H. Xie, C. Zhang, H. Li, H. Xu, S. L. Chin, Y. Cheng, and Z. Xu, “Remote creation of coherent emissions in air with two-color ultrafast laser pulses,” New J. Phys. 15(2), 023046 (2013).
[Crossref]

J. Yao, B. Zeng, H. Xu, G. Li, W. Chu, J. Ni, H. Zhang, S. L. Chin, Y. Cheng, and Z. Xu, “High-brightness switchable multi-wavelength remote laser in air,” Phys. Rev. A 84(5), 051802 (2011).
[Crossref]

Odhner, J. H.

J. H. Odhner, D. A. Romanov, and R. J. Levis, “Rovibrational wave-packet dispersion during femtosecond laser filamentation in air,” Phys. Rev. Lett. 103(7), 075005 (2009).
[Crossref] [PubMed]

Point, G.

Polynkin, P.

A. Azarm, P. Corkum, and P. Polynkin, “Optical gain in rotationally excited nitrogen molecular ions,” Phys. Rev. A 96(5), 051401 (2017).
[Crossref]

A. Laurain, M. Scheller, and P. Polynkin, “Low-threshold bidirectional air lasing,” Phys. Rev. Lett. 113(25), 253901 (2014).
[Crossref] [PubMed]

D. Kartashov, S. Ališauskas, A. Baltuška, A. Schmitt-Sody, W. Roach, and P. Polynkin, “Remotely pumped stimulated emission at 337 nm in atmospheric nitrogen,” Phys. Rev. A 88(4), 041805 (2013).
[Crossref]

Pugžlys, A.

D. Kartashov, S. Ališauskas, G. Andriukaitis, A. Pugžlys, M. Shneider, A. Zheltikov, S. L. Chin, and A. Baltuška, “Free-space nitrogen gas laser driven by a femtosecond filament,” Phys. Rev. A 86(3), 033831 (2012).
[Crossref]

Qiao, L.

Roach, W.

D. Kartashov, S. Ališauskas, A. Baltuška, A. Schmitt-Sody, W. Roach, and P. Polynkin, “Remotely pumped stimulated emission at 337 nm in atmospheric nitrogen,” Phys. Rev. A 88(4), 041805 (2013).
[Crossref]

Romanov, D. A.

J. H. Odhner, D. A. Romanov, and R. J. Levis, “Rovibrational wave-packet dispersion during femtosecond laser filamentation in air,” Phys. Rev. Lett. 103(7), 075005 (2009).
[Crossref] [PubMed]

Scheller, M.

A. Laurain, M. Scheller, and P. Polynkin, “Low-threshold bidirectional air lasing,” Phys. Rev. Lett. 113(25), 253901 (2014).
[Crossref] [PubMed]

Schmitt-Sody, A.

D. Kartashov, S. Ališauskas, A. Baltuška, A. Schmitt-Sody, W. Roach, and P. Polynkin, “Remotely pumped stimulated emission at 337 nm in atmospheric nitrogen,” Phys. Rev. A 88(4), 041805 (2013).
[Crossref]

Scully, M. O.

A. Dogariu, J. B. Michael, M. O. Scully, and R. B. Miles, “High-gain backward lasing in air,” Science 331(6016), 442–445 (2011).
[Crossref] [PubMed]

Shapiro, E. A.

M. Bitter, E. A. Shapiro, and V. Milner, “Coherent rovibrational revivals in a thermal molecular ensemble,” Phys. Rev. A 85(4), 043410 (2012).
[Crossref]

Shneider, M.

D. Kartashov, S. Ališauskas, G. Andriukaitis, A. Pugžlys, M. Shneider, A. Zheltikov, S. L. Chin, and A. Baltuška, “Free-space nitrogen gas laser driven by a femtosecond filament,” Phys. Rev. A 86(3), 033831 (2012).
[Crossref]

Simpson, E. R.

Y. Liu, P. Ding, N. Ibrakovic, S. Bengtsson, S. Chen, R. Danylo, E. R. Simpson, E. W. Larsen, X. Zhang, Z. Fan, A. Houard, J. Mauritsson, A. L’Huillier, C. L. Arnold, S. Zhuang, V. Tikhonchuk, and A. Mysyrowicz, “Unexpected sensitivity of nitrogen ions superradiant emission on pump laser wavelength and duration,” Phys. Rev. Lett. 119(20), 203205 (2017).
[Crossref] [PubMed]

Tikhonchuk, V.

Y. Liu, P. Ding, N. Ibrakovic, S. Bengtsson, S. Chen, R. Danylo, E. R. Simpson, E. W. Larsen, X. Zhang, Z. Fan, A. Houard, J. Mauritsson, A. L’Huillier, C. L. Arnold, S. Zhuang, V. Tikhonchuk, and A. Mysyrowicz, “Unexpected sensitivity of nitrogen ions superradiant emission on pump laser wavelength and duration,” Phys. Rev. Lett. 119(20), 203205 (2017).
[Crossref] [PubMed]

Y. Liu, P. Ding, G. Lambert, A. Houard, V. Tikhonchuk, and A. Mysyrowicz, “Recollision-induced superradiance of ionized nitrogen molecules,” Phys. Rev. Lett. 115(13), 133203 (2015).
[Crossref] [PubMed]

Wan, Y.

Wang, Z.

J. Yao, S. Jiang, W. Chu, B. Zeng, C. Wu, R. Lu, Z. Li, H. Xie, G. Li, C. Yu, Z. Wang, H. Jiang, Q. Gong, and Y. Cheng, “Population redistribution among multiple electronic states of molecular nitrogen ions in strong laser fields,” Phys. Rev. Lett. 116(14), 143007 (2016).
[Crossref] [PubMed]

Wu, C.

Z. Miao, X. Zhong, L. Zhang, W. Zheng, Y. Gao, Y. Liu, H. Jiang, Q. Gong, and C. Wu, “Stimulated-Raman-scattering-assisted superfluorescence enhancement from ionized nitrogen molecules in 800-nm femtosecond laser fields,” Phys. Rev. A 98(3), 033402 (2018).
[Crossref]

X. Zhong, Z. Miao, L. Zhang, Q. Liang, M. Lei, H. Jiang, Y. Liu, Q. Gong, and C. Wu, “Vibrational and electronic excitation of ionized nitrogen molecules in intense laser fields,” Phys. Rev. A 96(4), 043422 (2017).
[Crossref]

J. Yao, S. Jiang, W. Chu, B. Zeng, C. Wu, R. Lu, Z. Li, H. Xie, G. Li, C. Yu, Z. Wang, H. Jiang, Q. Gong, and Y. Cheng, “Population redistribution among multiple electronic states of molecular nitrogen ions in strong laser fields,” Phys. Rev. Lett. 116(14), 143007 (2016).
[Crossref] [PubMed]

Xie, H.

J. Yao, S. Jiang, W. Chu, B. Zeng, C. Wu, R. Lu, Z. Li, H. Xie, G. Li, C. Yu, Z. Wang, H. Jiang, Q. Gong, and Y. Cheng, “Population redistribution among multiple electronic states of molecular nitrogen ions in strong laser fields,” Phys. Rev. Lett. 116(14), 143007 (2016).
[Crossref] [PubMed]

H. Zhang, C. Jing, J. Yao, G. Li, B. Zeng, W. Chu, J. Ni, H. Xie, H. Xu, S. L. Chin, K. Yamanouchi, Y. Cheng, and Z. Xu, “Rotational coherence encoded in an “air-laser” Spectrum of Nitrogen Molecular Ions in an Intense Laser Field,” Phys. Rev. X 3(4), 041009 (2013).
[Crossref]

J. Yao, G. Li, C. Jing, B. Zeng, W. Chu, J. Ni, H. Zhang, H. Xie, C. Zhang, H. Li, H. Xu, S. L. Chin, Y. Cheng, and Z. Xu, “Remote creation of coherent emissions in air with two-color ultrafast laser pulses,” New J. Phys. 15(2), 023046 (2013).
[Crossref]

Xu, B.

J. Yao, W. Chu, Z. Liu, J. Chen, B. Xu, and Y. Cheng, “An anatomy of strong-field ionization-induced air lasing,” Appl. Phys. B 124(5), 73 (2018).
[Crossref]

B. Xu, S. Jiang, J. Yao, J. Chen, Z. Liu, W. Chu, Y. Wan, F. Zhang, L. Qiao, R. Lu, Y. Cheng, and Z. Xu, “Free-space N2+ lasers generated in strong laser fields: the role of molecular vibration,” Opt. Express 26(10), 13331–13339 (2018).
[Crossref] [PubMed]

J. Yao, W. Chu, Z. Liu, B. Xu, J. Chen, and Y. Cheng, “Generation of Raman lasers from nitrogen molecular ions driven by ultraintense laser fields,” New J. Phys. 20(3), 033035 (2018).
[Crossref]

Z. Liu, J. Yao, J. Chen, B. Xu, W. Chu, and Y. Cheng, “Near-resonant Raman amplification in the rotational quantum wave packets of nitrogen molecular ions generated by strong field ionization,” Phys. Rev. Lett. 120(8), 083205 (2018).
[Crossref] [PubMed]

Xu, H.

H. Li, M. Hou, H. Zang, Y. Fu, E. Lötstedt, T. Ando, A. Iwasaki, K. Yamanouchi, and H. Xu, “Significant enhancement of N2+ lasing by polarization-modulated ultrashort laser pulses,” Phys. Rev. Lett. 122(1), 013202 (2019).
[Crossref] [PubMed]

H. Xu, E. Lötstedt, T. Ando, A. Iwasaki, and K. Yamanouchi, “Alignment-dependent population inversion in N2+ in intense few-cycle laser fields,” Phys. Rev. A 96(4), 041401 (2017).

H. Xu, E. Lötstedt, A. Iwasaki, and K. Yamanouchi, “Sub-10-fs population inversion in N2+ in air lasing through multiple state coupling,” Nat. Commun. 6(1), 8347 (2015).
[Crossref] [PubMed]

J. Yao, G. Li, C. Jing, B. Zeng, W. Chu, J. Ni, H. Zhang, H. Xie, C. Zhang, H. Li, H. Xu, S. L. Chin, Y. Cheng, and Z. Xu, “Remote creation of coherent emissions in air with two-color ultrafast laser pulses,” New J. Phys. 15(2), 023046 (2013).
[Crossref]

H. Zhang, C. Jing, J. Yao, G. Li, B. Zeng, W. Chu, J. Ni, H. Xie, H. Xu, S. L. Chin, K. Yamanouchi, Y. Cheng, and Z. Xu, “Rotational coherence encoded in an “air-laser” Spectrum of Nitrogen Molecular Ions in an Intense Laser Field,” Phys. Rev. X 3(4), 041009 (2013).
[Crossref]

J. Yao, B. Zeng, H. Xu, G. Li, W. Chu, J. Ni, H. Zhang, S. L. Chin, Y. Cheng, and Z. Xu, “High-brightness switchable multi-wavelength remote laser in air,” Phys. Rev. A 84(5), 051802 (2011).
[Crossref]

Xu, Z.

B. Xu, S. Jiang, J. Yao, J. Chen, Z. Liu, W. Chu, Y. Wan, F. Zhang, L. Qiao, R. Lu, Y. Cheng, and Z. Xu, “Free-space N2+ lasers generated in strong laser fields: the role of molecular vibration,” Opt. Express 26(10), 13331–13339 (2018).
[Crossref] [PubMed]

H. Zhang, C. Jing, J. Yao, G. Li, B. Zeng, W. Chu, J. Ni, H. Xie, H. Xu, S. L. Chin, K. Yamanouchi, Y. Cheng, and Z. Xu, “Rotational coherence encoded in an “air-laser” Spectrum of Nitrogen Molecular Ions in an Intense Laser Field,” Phys. Rev. X 3(4), 041009 (2013).
[Crossref]

J. Yao, G. Li, C. Jing, B. Zeng, W. Chu, J. Ni, H. Zhang, H. Xie, C. Zhang, H. Li, H. Xu, S. L. Chin, Y. Cheng, and Z. Xu, “Remote creation of coherent emissions in air with two-color ultrafast laser pulses,” New J. Phys. 15(2), 023046 (2013).
[Crossref]

J. Yao, B. Zeng, H. Xu, G. Li, W. Chu, J. Ni, H. Zhang, S. L. Chin, Y. Cheng, and Z. Xu, “High-brightness switchable multi-wavelength remote laser in air,” Phys. Rev. A 84(5), 051802 (2011).
[Crossref]

Yamanouchi, K.

H. Li, M. Hou, H. Zang, Y. Fu, E. Lötstedt, T. Ando, A. Iwasaki, K. Yamanouchi, and H. Xu, “Significant enhancement of N2+ lasing by polarization-modulated ultrashort laser pulses,” Phys. Rev. Lett. 122(1), 013202 (2019).
[Crossref] [PubMed]

H. Xu, E. Lötstedt, T. Ando, A. Iwasaki, and K. Yamanouchi, “Alignment-dependent population inversion in N2+ in intense few-cycle laser fields,” Phys. Rev. A 96(4), 041401 (2017).

H. Xu, E. Lötstedt, A. Iwasaki, and K. Yamanouchi, “Sub-10-fs population inversion in N2+ in air lasing through multiple state coupling,” Nat. Commun. 6(1), 8347 (2015).
[Crossref] [PubMed]

H. Zhang, C. Jing, J. Yao, G. Li, B. Zeng, W. Chu, J. Ni, H. Xie, H. Xu, S. L. Chin, K. Yamanouchi, Y. Cheng, and Z. Xu, “Rotational coherence encoded in an “air-laser” Spectrum of Nitrogen Molecular Ions in an Intense Laser Field,” Phys. Rev. X 3(4), 041009 (2013).
[Crossref]

Yao, J.

J. Yao, W. Chu, Z. Liu, J. Chen, B. Xu, and Y. Cheng, “An anatomy of strong-field ionization-induced air lasing,” Appl. Phys. B 124(5), 73 (2018).
[Crossref]

B. Xu, S. Jiang, J. Yao, J. Chen, Z. Liu, W. Chu, Y. Wan, F. Zhang, L. Qiao, R. Lu, Y. Cheng, and Z. Xu, “Free-space N2+ lasers generated in strong laser fields: the role of molecular vibration,” Opt. Express 26(10), 13331–13339 (2018).
[Crossref] [PubMed]

Z. Liu, J. Yao, J. Chen, B. Xu, W. Chu, and Y. Cheng, “Near-resonant Raman amplification in the rotational quantum wave packets of nitrogen molecular ions generated by strong field ionization,” Phys. Rev. Lett. 120(8), 083205 (2018).
[Crossref] [PubMed]

J. Yao, W. Chu, Z. Liu, B. Xu, J. Chen, and Y. Cheng, “Generation of Raman lasers from nitrogen molecular ions driven by ultraintense laser fields,” New J. Phys. 20(3), 033035 (2018).
[Crossref]

J. Yao, S. Jiang, W. Chu, B. Zeng, C. Wu, R. Lu, Z. Li, H. Xie, G. Li, C. Yu, Z. Wang, H. Jiang, Q. Gong, and Y. Cheng, “Population redistribution among multiple electronic states of molecular nitrogen ions in strong laser fields,” Phys. Rev. Lett. 116(14), 143007 (2016).
[Crossref] [PubMed]

H. Zhang, C. Jing, J. Yao, G. Li, B. Zeng, W. Chu, J. Ni, H. Xie, H. Xu, S. L. Chin, K. Yamanouchi, Y. Cheng, and Z. Xu, “Rotational coherence encoded in an “air-laser” Spectrum of Nitrogen Molecular Ions in an Intense Laser Field,” Phys. Rev. X 3(4), 041009 (2013).
[Crossref]

J. Yao, G. Li, C. Jing, B. Zeng, W. Chu, J. Ni, H. Zhang, H. Xie, C. Zhang, H. Li, H. Xu, S. L. Chin, Y. Cheng, and Z. Xu, “Remote creation of coherent emissions in air with two-color ultrafast laser pulses,” New J. Phys. 15(2), 023046 (2013).
[Crossref]

J. Yao, B. Zeng, H. Xu, G. Li, W. Chu, J. Ni, H. Zhang, S. L. Chin, Y. Cheng, and Z. Xu, “High-brightness switchable multi-wavelength remote laser in air,” Phys. Rev. A 84(5), 051802 (2011).
[Crossref]

Yu, C.

J. Yao, S. Jiang, W. Chu, B. Zeng, C. Wu, R. Lu, Z. Li, H. Xie, G. Li, C. Yu, Z. Wang, H. Jiang, Q. Gong, and Y. Cheng, “Population redistribution among multiple electronic states of molecular nitrogen ions in strong laser fields,” Phys. Rev. Lett. 116(14), 143007 (2016).
[Crossref] [PubMed]

Zang, H.

H. Li, M. Hou, H. Zang, Y. Fu, E. Lötstedt, T. Ando, A. Iwasaki, K. Yamanouchi, and H. Xu, “Significant enhancement of N2+ lasing by polarization-modulated ultrashort laser pulses,” Phys. Rev. Lett. 122(1), 013202 (2019).
[Crossref] [PubMed]

Zeng, B.

J. Yao, S. Jiang, W. Chu, B. Zeng, C. Wu, R. Lu, Z. Li, H. Xie, G. Li, C. Yu, Z. Wang, H. Jiang, Q. Gong, and Y. Cheng, “Population redistribution among multiple electronic states of molecular nitrogen ions in strong laser fields,” Phys. Rev. Lett. 116(14), 143007 (2016).
[Crossref] [PubMed]

J. Yao, G. Li, C. Jing, B. Zeng, W. Chu, J. Ni, H. Zhang, H. Xie, C. Zhang, H. Li, H. Xu, S. L. Chin, Y. Cheng, and Z. Xu, “Remote creation of coherent emissions in air with two-color ultrafast laser pulses,” New J. Phys. 15(2), 023046 (2013).
[Crossref]

H. Zhang, C. Jing, J. Yao, G. Li, B. Zeng, W. Chu, J. Ni, H. Xie, H. Xu, S. L. Chin, K. Yamanouchi, Y. Cheng, and Z. Xu, “Rotational coherence encoded in an “air-laser” Spectrum of Nitrogen Molecular Ions in an Intense Laser Field,” Phys. Rev. X 3(4), 041009 (2013).
[Crossref]

J. Yao, B. Zeng, H. Xu, G. Li, W. Chu, J. Ni, H. Zhang, S. L. Chin, Y. Cheng, and Z. Xu, “High-brightness switchable multi-wavelength remote laser in air,” Phys. Rev. A 84(5), 051802 (2011).
[Crossref]

Zhang, C.

M. Britton, P. Laferrière, D. H. Ko, Z. Li, F. Kong, G. Brown, A. Naumov, C. Zhang, L. Arissian, and P. B. Corkum, “Testing the role of recollision in.N2+,” Phys. Rev. Lett. 120(13), 133208 (2018).
[Crossref] [PubMed]

J. Yao, G. Li, C. Jing, B. Zeng, W. Chu, J. Ni, H. Zhang, H. Xie, C. Zhang, H. Li, H. Xu, S. L. Chin, Y. Cheng, and Z. Xu, “Remote creation of coherent emissions in air with two-color ultrafast laser pulses,” New J. Phys. 15(2), 023046 (2013).
[Crossref]

Zhang, F.

Zhang, H.

H. Zhang, C. Jing, J. Yao, G. Li, B. Zeng, W. Chu, J. Ni, H. Xie, H. Xu, S. L. Chin, K. Yamanouchi, Y. Cheng, and Z. Xu, “Rotational coherence encoded in an “air-laser” Spectrum of Nitrogen Molecular Ions in an Intense Laser Field,” Phys. Rev. X 3(4), 041009 (2013).
[Crossref]

J. Yao, G. Li, C. Jing, B. Zeng, W. Chu, J. Ni, H. Zhang, H. Xie, C. Zhang, H. Li, H. Xu, S. L. Chin, Y. Cheng, and Z. Xu, “Remote creation of coherent emissions in air with two-color ultrafast laser pulses,” New J. Phys. 15(2), 023046 (2013).
[Crossref]

J. Yao, B. Zeng, H. Xu, G. Li, W. Chu, J. Ni, H. Zhang, S. L. Chin, Y. Cheng, and Z. Xu, “High-brightness switchable multi-wavelength remote laser in air,” Phys. Rev. A 84(5), 051802 (2011).
[Crossref]

Zhang, L.

Z. Miao, X. Zhong, L. Zhang, W. Zheng, Y. Gao, Y. Liu, H. Jiang, Q. Gong, and C. Wu, “Stimulated-Raman-scattering-assisted superfluorescence enhancement from ionized nitrogen molecules in 800-nm femtosecond laser fields,” Phys. Rev. A 98(3), 033402 (2018).
[Crossref]

X. Zhong, Z. Miao, L. Zhang, Q. Liang, M. Lei, H. Jiang, Y. Liu, Q. Gong, and C. Wu, “Vibrational and electronic excitation of ionized nitrogen molecules in intense laser fields,” Phys. Rev. A 96(4), 043422 (2017).
[Crossref]

Zhang, X.

Y. Liu, P. Ding, N. Ibrakovic, S. Bengtsson, S. Chen, R. Danylo, E. R. Simpson, E. W. Larsen, X. Zhang, Z. Fan, A. Houard, J. Mauritsson, A. L’Huillier, C. L. Arnold, S. Zhuang, V. Tikhonchuk, and A. Mysyrowicz, “Unexpected sensitivity of nitrogen ions superradiant emission on pump laser wavelength and duration,” Phys. Rev. Lett. 119(20), 203205 (2017).
[Crossref] [PubMed]

Zheltikov, A.

D. Kartashov, S. Ališauskas, G. Andriukaitis, A. Pugžlys, M. Shneider, A. Zheltikov, S. L. Chin, and A. Baltuška, “Free-space nitrogen gas laser driven by a femtosecond filament,” Phys. Rev. A 86(3), 033831 (2012).
[Crossref]

Zheng, W.

Z. Miao, X. Zhong, L. Zhang, W. Zheng, Y. Gao, Y. Liu, H. Jiang, Q. Gong, and C. Wu, “Stimulated-Raman-scattering-assisted superfluorescence enhancement from ionized nitrogen molecules in 800-nm femtosecond laser fields,” Phys. Rev. A 98(3), 033402 (2018).
[Crossref]

Zhong, X.

Z. Miao, X. Zhong, L. Zhang, W. Zheng, Y. Gao, Y. Liu, H. Jiang, Q. Gong, and C. Wu, “Stimulated-Raman-scattering-assisted superfluorescence enhancement from ionized nitrogen molecules in 800-nm femtosecond laser fields,” Phys. Rev. A 98(3), 033402 (2018).
[Crossref]

X. Zhong, Z. Miao, L. Zhang, Q. Liang, M. Lei, H. Jiang, Y. Liu, Q. Gong, and C. Wu, “Vibrational and electronic excitation of ionized nitrogen molecules in intense laser fields,” Phys. Rev. A 96(4), 043422 (2017).
[Crossref]

Zhuang, S.

Y. Liu, P. Ding, N. Ibrakovic, S. Bengtsson, S. Chen, R. Danylo, E. R. Simpson, E. W. Larsen, X. Zhang, Z. Fan, A. Houard, J. Mauritsson, A. L’Huillier, C. L. Arnold, S. Zhuang, V. Tikhonchuk, and A. Mysyrowicz, “Unexpected sensitivity of nitrogen ions superradiant emission on pump laser wavelength and duration,” Phys. Rev. Lett. 119(20), 203205 (2017).
[Crossref] [PubMed]

Appl. Phys. B (2)

Q. Luo, W. Liu, and S. L. Chin, “Lasing action in air induced by ultra-fast laser filamentation,” Appl. Phys. B 76(3), 337–340 (2003).
[Crossref]

J. Yao, W. Chu, Z. Liu, J. Chen, B. Xu, and Y. Cheng, “An anatomy of strong-field ionization-induced air lasing,” Appl. Phys. B 124(5), 73 (2018).
[Crossref]

J. Phys. B (1)

S. I. Mitryukovskiy, Y. Liu, A. Houard, and A. Mysyrowicz, “Re-evaluation of the peak intensity inside a femtosecond laser filament in air,” J. Phys. B 48(9), 094003 (2015).
[Crossref]

J. Phys. Chem. Ref. Data (1)

A. Lofthus and P. H. Krupenie, “The spectrum of molecular nitrogen,” J. Phys. Chem. Ref. Data 6(1), 113–307 (1977).
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Nat. Commun. (1)

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J. Yao, W. Chu, Z. Liu, B. Xu, J. Chen, and Y. Cheng, “Generation of Raman lasers from nitrogen molecular ions driven by ultraintense laser fields,” New J. Phys. 20(3), 033035 (2018).
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D. Kartashov, S. Haessler, S. Ališauskas, G. Andriukaitis, A. Pugžlys, A. Baltuška, J. Möhring, D. Starukhin, M. Motzkus, A. M. Zheltikov, M. Richter, F. Morales, O. Smirnova, M. Yu. Ivanov, and M. Spanner, “Transient inversion in rotationally aligned nitrogen ions in a femtosecond filament,” in Research in Optical Sciences (Optical Society of America, 2014), paper HTh4B.5.

P. Polynkin and Y. Cheng, Air Lasing (Springer, 2018).

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Figures (6)

Fig. 1
Fig. 1 (a) Schematic diagram of experimental setup. L1: f = 20 cm lens; L2: f = 10 cm lens; L3: f = 30 cm lens; L4: f = 20 cm lens; SP: sapphire plate; BBO: β-barium borate; P: polarizer; HWP: half wave plate; DM: dichroic mirror with high reflectivity around 400 nm and high transmission around 800 nm. Energy diagram of coherent (b) Stokes and (c) anti-Stokes Raman scattering in N 2 + ions. (d) The original (black dashed line) and broadened (blue solid line) spectra of the pump pulses measured before and after the gas chamber, respectively.
Fig. 2
Fig. 2 The forward spectra obtained by injecting (a) 391 nm, (b) 396 nm and (c) 401 nm probe pulses into the plasma channel induced by 2.1 mJ, 800 nm pump pulse. For comparison, the original probe spectra measured without the pump laser are indicated by red dashed lines. The delay between pump and probe is 0.667 ps. For comparison, the signals on two sides of the probe spectrum are multiplied by a factor, which is indicated on the top of the corresponding spectrum. The inset of Fig. 2(a) is the spatial profile of the strong 428 nm radiation. The insets of Figs. 2(b) and 2(c) are the enlarged spectral regions indicated with blue dashed boxes.
Fig. 3
Fig. 3 (a) The intensity of the strong 428 nm signal as a function of angles of the polarizer (blue circles). The measured data are fitted by the Malus law (blue solid curve). Zero degree indicates the polarization direction of the probe pulses. (b) The measured interference patterns of the 428 nm signal using a Young's double-slit interferometer. (c) The measured fringe visibility as a function of the time delay of two arms of the Michelson interferometer. The solid line is the numerical fit to guide the eyes. The interference patterns measured at the time delay of −10 ps, 0 ps and 20 ps are indicated in the insets.
Fig. 4
Fig. 4 Spectra of the nonlinear radiations generated by (a) 391 nm, (b) 401 nm probe pulses and the pump laser as a function of the time delay between two pulses (logarithmic color scale). The same filter was employed in two measurements, thus its transmission was not considered in the spectra. (c) The 439 nm Raman signal (black solid line), the 428 nm emission induced by the 391 nm probe (blue dash dot line) and the 401 nm probe (pink shaded curve) as a function of the time delay. All signals are normalized individually.
Fig. 5
Fig. 5 The intensity of (a) the 391 nm absorption and (b) the 428 nm emission as a function of the power of the 391 nm probe laser. (c) The intensity of the 439 nm Raman signal as a function of the power of the 401 nm probe laser. All signals are normalized individually. The experimental data are fitted with the functions indicated below the curves.
Fig. 6
Fig. 6 (a) The intensity change of the probe pulse in the vicinity of 391 nm (blue crosses) and the intensity of the 428 nm emission (red dots) as a function of gas pressures. The positive/negative intensity change around 391 nm represents amplification/absorption. (b) The intensity of the 428 nm emission (red dots) and the 439 nm Raman signal (black circles) as a function of gas pressures. All data are fitted to guide the eyes.

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