Abstract

Terahertz (THz) waves can be generated by the nonlinear interaction between ultrashort laser pulses and air. The semiclassical photocurrent model is widely used. It is simple, but neglects the quantum effects. Some theoretical works are based on solving the time-dependent Schrödinger equation. However, it meets the difficulty of prohibitively large boxes in long-time evolution. Here we adopted the wave-function splitting algorithm to fully contain the information of photoelectrons. The contributions of the excited states and interference effects in electron wavepackets to THz radiation are studied numerically. We also theoretically investigated the THz generation from nitrogen molecules in a biased electric field. It is found that the THz yield enhancement as a function of the static field strength in experiments can be reproduced well by our method. In addition, the restriction of wavelength and phase difference in the two-color laser fields is less strict in the presence of the static field.

© 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

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References

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  1. F. Buccheri, P. Huang, and X. Zhang, “Generation and detection of pulsed terahertz waves in gas: from elongated plasmas to microplasmas,” Front. Optoelectron. 11(3), 209–244 (2018).
    [Crossref]
  2. C. Miao, J. P. Palastro, and T. M. Antonsen, “High-power tunable laser driven THz generation in corrugated plasma waveguides,” Phys. Plasmas 24(4), 043109 (2017).
    [Crossref]
  3. M. Abedi-Varaki and S. Jafari, “Enhanced THz radiation from beating of two Cosh-Gaussian laser beams in a wiggler-assisted collisional magnetized plasma,” J. Opt. Soc. Am. B 35(5), 1165–1172 (2018).
    [Crossref]
  4. M. Abedi-Varaki, “Enhanced THz radiation generation by photo-mixing of tophat lasers in rippled density plasma with a planar magnetostatic wiggler and s-parameter,” Phys. Plasmas 25(2), 023109 (2018).
    [Crossref]
  5. K. Yuan and A. D. Bandrauk, “Single Circularly Polarized Attosecond Pulse Generation by Intense Few Cycle Elliptically Polarized Laser Pulses and Terahertz Fields from Molecular Media,” Phys. Rev. Lett. 110(2), 023003 (2013).
    [Crossref]
  6. H. Du, H. Wang, and B. Hu, “Supercontinuous high harmonic generation from asymmetric molecules in the presence of a terahertz field,” Chin. Phys. B 20(4), 044207 (2011).
    [Crossref]
  7. K. Kim, “Generation of coherent terahertz radiation in ultrafast laser-gas interactions,” Phys. Plasmas 16(5), 056706 (2009).
    [Crossref]
  8. H. Dai and J. Liu, “Terahertz emission dependence on the irradiating laser pulse width in generating terahertz waves from two-color laser-induced gas plasma,” J. Mod. Opt. 58(10), 859–864 (2011).
    [Crossref]
  9. K. Y. Kim, J. H. Glownia, A. J. Taylor, and G. Rodriguez, “Terahertz emission from ultrafast ionizing air in symmetry-broken laser fields,” Opt. Express 15(8), 4577–4584 (2007).
    [Crossref]
  10. C. Lu, T. He, L. Zhang, H. Zhang, Y. Yao, S. Li, and S. Zhang, “Effect of two-color laser pulse duration on intense terahertz generation at different laser intensities,” Phys. Rev. A 92(6), 063850 (2015).
    [Crossref]
  11. W. Wang, Z. Sheng, Y. Li, Y. Zhang, and J. Zhang, “Terahertz emission driven by two-color laser pulses at various frequency ratios,” Phys. Rev. A 96(2), 023844 (2017).
    [Crossref]
  12. L. Zhang, G. Wang, and X. Zhou, “Optimized two- and three-colour laser pulses for the intense terahertz wave generation,” J. Mod. Opt. 63(21), 2159–2165 (2016).
    [Crossref]
  13. J. Dai, N. Karpowicz, and X. Zhang, “Coherent Polarization Control of Terahertz Waves Generated from Two-Color Laser-Induced Gas Plasma,” Phys. Rev. Lett. 103(2), 023001 (2009).
    [Crossref]
  14. W. Chen, Y. Huang, C. Meng, J. Liu, Z. Zhou, D. Zhang, J. Yuan, and Z. Zhao, “Theoretical study of terahertz generation from atoms and aligned molecules driven by two-color laser fields,” Phys. Rev. A 92(3), 033410 (2015).
    [Crossref]
  15. K. Yuan and A. D. Bandrauk, “Angle-dependent molecular above-threshold ionization with ultrashort intense linearly and circularly polarized laser pulses,” Phys. Rev. A 84(1), 013426 (2011).
    [Crossref]
  16. Z. Zhou, D. Zhang, Z. Zhao, and J. Yuan, “Terahertz emission of atoms driven by ultrashort laser pulses,” Phys. Rev. A 79(6), 063413 (2009).
    [Crossref]
  17. L. Du, S. Zhao, X. Zhou, and Z. Zhao, “THz wave emission from argon in two-color laser field,” Chin. Phys. B 24(4), 043203 (2015).
    [Crossref]
  18. K. Yuan and A. D. Bandrauk, “Molecular above-threshold-ionization angular distributions with attosecond bichromatic intense XUV laser pulses,” Phys. Rev. A 85(1), 013413 (2012).
    [Crossref]
  19. K. Yuan, S. Chelkowski, and A. D. Bandrauk, “Rotations of molecular photoelectron angular distributions in above threshold ionization of ${\mathrm {H}}_{2}^{+}$H2+ by intense circularly polarized attosecond UV laser pulses,” J. Phys. B 47(20), 204009 (2014).
    [Crossref]
  20. K. Zhang, Y. Zhang, T.-M. Yan, and Y. H. Jiang, “Terahertz generation in dual-color laser: continuum electron in strong-field single-atom ionization,” arXiv:1805.12127.
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    [Crossref]
  22. A. A. Silaev, M. Y. Ryabikin, and N. V. Vvedenskii, “Strong-field phenomena caused by ultrashort laser pulses: Effective one- and two-dimensional quantum-mechanical descriptions,” Phys. Rev. A 82(3), 033416 (2010).
    [Crossref]
  23. F. He, C. Ruiz, and A. Becker, “Absorbing boundaries in numerical solutions of the time-dependent Schrödinger equation on a grid using exterior complex scaling,” Phys. Rev. A 75(5), 053407 (2007).
    [Crossref]
  24. M. Lein, T. Kreibich, E. K. U. Gross, and V. Engel, “Strong-field ionization dynamics of a model H2 molecule,” Phys. Rev. A 65(3), 033403 (2002).
    [Crossref]
  25. A. A. Gonoskov, I. A. Gonoskov, M. Y. Ryabikin, and A. M. Sergeev, “Diffraction imaging of a diatomic molecule using recolliding electrons: Role of Coulomb potential and nuclear motion,” Phys. Rev. A 77(3), 033424 (2008).
    [Crossref]
  26. J. L. Krause, K. J. Schafer, and K. C. Kulander, “Calculation of photoemission from atoms subject to intense laser fields,” Phys. Rev. A 45(7), 4998–5010 (1992).
    [Crossref]
  27. A. A. Silaev and N. V. Vvedenskii, “Residual-Current Excitation in Plasmas Produced by Few-Cycle Laser Pulses,” Phys. Rev. Lett. 102(11), 115005 (2009).
    [Crossref]
  28. S. Chelkowski, C. Foisy, and A. D. Bandrauk, “Electron-nuclear dynamics of multiphoton ${\mathrm {H}}_{2}^{+}$H2+ dissociative ionization in intense laser fields,” Phys. Rev. A 57(2), 1176–1185 (1998).
    [Crossref]
  29. T. Loffler, F. Jacob, and H. G. Roskos, “Generation of terahertz pulses by photoionization of electrically biased air Generation of terahertz pulses by photoionization of electrically biased air,” Appl. Phys. Lett. 77(3), 453–455 (2000).
    [Crossref]
  30. A. Houard, Y. Liu, B. Prade, V. Tikhonchuk, and A. Mysyrowicz, “Strong Enhancement of Terahertz Radiation from Laser Filaments in Air by a Static Electric Field,” Phys. Rev. Lett. 100(25), 255006 (2008).
    [Crossref]
  31. T. Wang, C. Marceau, Y. Chen, S. Yuan, F. Theberge, M. Chateauneuf, J. Dubois, and S. L. Chin, “Terahertz emission from a dc-biased two- color femtosecond laser-induced filament in air,” Appl. Phys. Lett. 96(21), 211113 (2010).
    [Crossref]
  32. A. A. Ushakov, N. A. Panov, P. A. Chizhov, D. E. Shipilo, V. V. Bukin, A. B. Savelev, S. V. Garnov, and O. G. Kosareva, “Waveform, spectrum, and energy of backward terahertz emission from two-color femtosecond laser induced microplasma,” Appl. Phys. Lett. 114(8), 081102 (2019).
    [Crossref]
  33. Q. Su, Q. Xu, N. Zhang, Y. Zhang, and W. Liu, “Control of terahertz pulse polarization by two crossing DC fields during femtosecond laser filamentation in air,” J. Opt. Soc. Am. B 36(10), G1–G5 (2019).
    [Crossref]
  34. M. V. Ammosov, N. B. Delone, and V. P. Krainov, “Tunnel ionization of complex atoms and of atomic ions in an alternating electromagnetic field,” Zh. Eksp. Teor. Fiz. 91, 2008 (1986) [Sov. Phys. JETP 64, 1191 (1986)].
  35. X. M. Tong, Z. X. Zhao, and C. D. Lin, “Theory of molecular tunneling ionization,” Phys. Rev. A 66(3), 033402 (2002).
    [Crossref]
  36. M. D. Feit, J. A. Fleck, and A. Steiger, “Solution of the Schrödinger Equation by a Spectral Method,” J. Comput. Phys. 47(3), 412–433 (1982).
    [Crossref]
  37. X. B. Bian, “Photoionization of atoms and molecules studied by the Crank-Nicolson method,” Phys. Rev. A 90(3), 033403 (2014).
    [Crossref]
  38. X. B. Bian, L. Y. Peng, and T. Y. Shi, “Enhanced excitation and ionization of ${{\mathrm {H}}_{2}}^{+}$H2+ by a single- and two-color intense laser pulse,” Phys. Rev. A 77(6), 063415 (2008).
    [Crossref]

2019 (2)

A. A. Ushakov, N. A. Panov, P. A. Chizhov, D. E. Shipilo, V. V. Bukin, A. B. Savelev, S. V. Garnov, and O. G. Kosareva, “Waveform, spectrum, and energy of backward terahertz emission from two-color femtosecond laser induced microplasma,” Appl. Phys. Lett. 114(8), 081102 (2019).
[Crossref]

Q. Su, Q. Xu, N. Zhang, Y. Zhang, and W. Liu, “Control of terahertz pulse polarization by two crossing DC fields during femtosecond laser filamentation in air,” J. Opt. Soc. Am. B 36(10), G1–G5 (2019).
[Crossref]

2018 (3)

M. Abedi-Varaki and S. Jafari, “Enhanced THz radiation from beating of two Cosh-Gaussian laser beams in a wiggler-assisted collisional magnetized plasma,” J. Opt. Soc. Am. B 35(5), 1165–1172 (2018).
[Crossref]

M. Abedi-Varaki, “Enhanced THz radiation generation by photo-mixing of tophat lasers in rippled density plasma with a planar magnetostatic wiggler and s-parameter,” Phys. Plasmas 25(2), 023109 (2018).
[Crossref]

F. Buccheri, P. Huang, and X. Zhang, “Generation and detection of pulsed terahertz waves in gas: from elongated plasmas to microplasmas,” Front. Optoelectron. 11(3), 209–244 (2018).
[Crossref]

2017 (2)

C. Miao, J. P. Palastro, and T. M. Antonsen, “High-power tunable laser driven THz generation in corrugated plasma waveguides,” Phys. Plasmas 24(4), 043109 (2017).
[Crossref]

W. Wang, Z. Sheng, Y. Li, Y. Zhang, and J. Zhang, “Terahertz emission driven by two-color laser pulses at various frequency ratios,” Phys. Rev. A 96(2), 023844 (2017).
[Crossref]

2016 (1)

L. Zhang, G. Wang, and X. Zhou, “Optimized two- and three-colour laser pulses for the intense terahertz wave generation,” J. Mod. Opt. 63(21), 2159–2165 (2016).
[Crossref]

2015 (3)

W. Chen, Y. Huang, C. Meng, J. Liu, Z. Zhou, D. Zhang, J. Yuan, and Z. Zhao, “Theoretical study of terahertz generation from atoms and aligned molecules driven by two-color laser fields,” Phys. Rev. A 92(3), 033410 (2015).
[Crossref]

L. Du, S. Zhao, X. Zhou, and Z. Zhao, “THz wave emission from argon in two-color laser field,” Chin. Phys. B 24(4), 043203 (2015).
[Crossref]

C. Lu, T. He, L. Zhang, H. Zhang, Y. Yao, S. Li, and S. Zhang, “Effect of two-color laser pulse duration on intense terahertz generation at different laser intensities,” Phys. Rev. A 92(6), 063850 (2015).
[Crossref]

2014 (2)

X. B. Bian, “Photoionization of atoms and molecules studied by the Crank-Nicolson method,” Phys. Rev. A 90(3), 033403 (2014).
[Crossref]

K. Yuan, S. Chelkowski, and A. D. Bandrauk, “Rotations of molecular photoelectron angular distributions in above threshold ionization of ${\mathrm {H}}_{2}^{+}$H2+ by intense circularly polarized attosecond UV laser pulses,” J. Phys. B 47(20), 204009 (2014).
[Crossref]

2013 (1)

K. Yuan and A. D. Bandrauk, “Single Circularly Polarized Attosecond Pulse Generation by Intense Few Cycle Elliptically Polarized Laser Pulses and Terahertz Fields from Molecular Media,” Phys. Rev. Lett. 110(2), 023003 (2013).
[Crossref]

2012 (1)

K. Yuan and A. D. Bandrauk, “Molecular above-threshold-ionization angular distributions with attosecond bichromatic intense XUV laser pulses,” Phys. Rev. A 85(1), 013413 (2012).
[Crossref]

2011 (4)

H. Du, H. Wang, and B. Hu, “Supercontinuous high harmonic generation from asymmetric molecules in the presence of a terahertz field,” Chin. Phys. B 20(4), 044207 (2011).
[Crossref]

H. Dai and J. Liu, “Terahertz emission dependence on the irradiating laser pulse width in generating terahertz waves from two-color laser-induced gas plasma,” J. Mod. Opt. 58(10), 859–864 (2011).
[Crossref]

K. Yuan and A. D. Bandrauk, “Circularly polarized molecular high-order harmonic generation in ${{\mathrm {H}}_{2}}^{+}$H2+ with intense laser pulses and static fields,” Phys. Rev. A 83(6), 063422 (2011).
[Crossref]

K. Yuan and A. D. Bandrauk, “Angle-dependent molecular above-threshold ionization with ultrashort intense linearly and circularly polarized laser pulses,” Phys. Rev. A 84(1), 013426 (2011).
[Crossref]

2010 (2)

A. A. Silaev, M. Y. Ryabikin, and N. V. Vvedenskii, “Strong-field phenomena caused by ultrashort laser pulses: Effective one- and two-dimensional quantum-mechanical descriptions,” Phys. Rev. A 82(3), 033416 (2010).
[Crossref]

T. Wang, C. Marceau, Y. Chen, S. Yuan, F. Theberge, M. Chateauneuf, J. Dubois, and S. L. Chin, “Terahertz emission from a dc-biased two- color femtosecond laser-induced filament in air,” Appl. Phys. Lett. 96(21), 211113 (2010).
[Crossref]

2009 (4)

A. A. Silaev and N. V. Vvedenskii, “Residual-Current Excitation in Plasmas Produced by Few-Cycle Laser Pulses,” Phys. Rev. Lett. 102(11), 115005 (2009).
[Crossref]

Z. Zhou, D. Zhang, Z. Zhao, and J. Yuan, “Terahertz emission of atoms driven by ultrashort laser pulses,” Phys. Rev. A 79(6), 063413 (2009).
[Crossref]

J. Dai, N. Karpowicz, and X. Zhang, “Coherent Polarization Control of Terahertz Waves Generated from Two-Color Laser-Induced Gas Plasma,” Phys. Rev. Lett. 103(2), 023001 (2009).
[Crossref]

K. Kim, “Generation of coherent terahertz radiation in ultrafast laser-gas interactions,” Phys. Plasmas 16(5), 056706 (2009).
[Crossref]

2008 (3)

A. A. Gonoskov, I. A. Gonoskov, M. Y. Ryabikin, and A. M. Sergeev, “Diffraction imaging of a diatomic molecule using recolliding electrons: Role of Coulomb potential and nuclear motion,” Phys. Rev. A 77(3), 033424 (2008).
[Crossref]

A. Houard, Y. Liu, B. Prade, V. Tikhonchuk, and A. Mysyrowicz, “Strong Enhancement of Terahertz Radiation from Laser Filaments in Air by a Static Electric Field,” Phys. Rev. Lett. 100(25), 255006 (2008).
[Crossref]

X. B. Bian, L. Y. Peng, and T. Y. Shi, “Enhanced excitation and ionization of ${{\mathrm {H}}_{2}}^{+}$H2+ by a single- and two-color intense laser pulse,” Phys. Rev. A 77(6), 063415 (2008).
[Crossref]

2007 (2)

K. Y. Kim, J. H. Glownia, A. J. Taylor, and G. Rodriguez, “Terahertz emission from ultrafast ionizing air in symmetry-broken laser fields,” Opt. Express 15(8), 4577–4584 (2007).
[Crossref]

F. He, C. Ruiz, and A. Becker, “Absorbing boundaries in numerical solutions of the time-dependent Schrödinger equation on a grid using exterior complex scaling,” Phys. Rev. A 75(5), 053407 (2007).
[Crossref]

2002 (2)

M. Lein, T. Kreibich, E. K. U. Gross, and V. Engel, “Strong-field ionization dynamics of a model H2 molecule,” Phys. Rev. A 65(3), 033403 (2002).
[Crossref]

X. M. Tong, Z. X. Zhao, and C. D. Lin, “Theory of molecular tunneling ionization,” Phys. Rev. A 66(3), 033402 (2002).
[Crossref]

2000 (1)

T. Loffler, F. Jacob, and H. G. Roskos, “Generation of terahertz pulses by photoionization of electrically biased air Generation of terahertz pulses by photoionization of electrically biased air,” Appl. Phys. Lett. 77(3), 453–455 (2000).
[Crossref]

1998 (1)

S. Chelkowski, C. Foisy, and A. D. Bandrauk, “Electron-nuclear dynamics of multiphoton ${\mathrm {H}}_{2}^{+}$H2+ dissociative ionization in intense laser fields,” Phys. Rev. A 57(2), 1176–1185 (1998).
[Crossref]

1992 (1)

J. L. Krause, K. J. Schafer, and K. C. Kulander, “Calculation of photoemission from atoms subject to intense laser fields,” Phys. Rev. A 45(7), 4998–5010 (1992).
[Crossref]

1986 (1)

M. V. Ammosov, N. B. Delone, and V. P. Krainov, “Tunnel ionization of complex atoms and of atomic ions in an alternating electromagnetic field,” Zh. Eksp. Teor. Fiz. 91, 2008 (1986) [Sov. Phys. JETP 64, 1191 (1986)].

1982 (1)

M. D. Feit, J. A. Fleck, and A. Steiger, “Solution of the Schrödinger Equation by a Spectral Method,” J. Comput. Phys. 47(3), 412–433 (1982).
[Crossref]

Abedi-Varaki, M.

M. Abedi-Varaki and S. Jafari, “Enhanced THz radiation from beating of two Cosh-Gaussian laser beams in a wiggler-assisted collisional magnetized plasma,” J. Opt. Soc. Am. B 35(5), 1165–1172 (2018).
[Crossref]

M. Abedi-Varaki, “Enhanced THz radiation generation by photo-mixing of tophat lasers in rippled density plasma with a planar magnetostatic wiggler and s-parameter,” Phys. Plasmas 25(2), 023109 (2018).
[Crossref]

Ammosov, M. V.

M. V. Ammosov, N. B. Delone, and V. P. Krainov, “Tunnel ionization of complex atoms and of atomic ions in an alternating electromagnetic field,” Zh. Eksp. Teor. Fiz. 91, 2008 (1986) [Sov. Phys. JETP 64, 1191 (1986)].

Antonsen, T. M.

C. Miao, J. P. Palastro, and T. M. Antonsen, “High-power tunable laser driven THz generation in corrugated plasma waveguides,” Phys. Plasmas 24(4), 043109 (2017).
[Crossref]

Bandrauk, A. D.

K. Yuan, S. Chelkowski, and A. D. Bandrauk, “Rotations of molecular photoelectron angular distributions in above threshold ionization of ${\mathrm {H}}_{2}^{+}$H2+ by intense circularly polarized attosecond UV laser pulses,” J. Phys. B 47(20), 204009 (2014).
[Crossref]

K. Yuan and A. D. Bandrauk, “Single Circularly Polarized Attosecond Pulse Generation by Intense Few Cycle Elliptically Polarized Laser Pulses and Terahertz Fields from Molecular Media,” Phys. Rev. Lett. 110(2), 023003 (2013).
[Crossref]

K. Yuan and A. D. Bandrauk, “Molecular above-threshold-ionization angular distributions with attosecond bichromatic intense XUV laser pulses,” Phys. Rev. A 85(1), 013413 (2012).
[Crossref]

K. Yuan and A. D. Bandrauk, “Circularly polarized molecular high-order harmonic generation in ${{\mathrm {H}}_{2}}^{+}$H2+ with intense laser pulses and static fields,” Phys. Rev. A 83(6), 063422 (2011).
[Crossref]

K. Yuan and A. D. Bandrauk, “Angle-dependent molecular above-threshold ionization with ultrashort intense linearly and circularly polarized laser pulses,” Phys. Rev. A 84(1), 013426 (2011).
[Crossref]

S. Chelkowski, C. Foisy, and A. D. Bandrauk, “Electron-nuclear dynamics of multiphoton ${\mathrm {H}}_{2}^{+}$H2+ dissociative ionization in intense laser fields,” Phys. Rev. A 57(2), 1176–1185 (1998).
[Crossref]

Becker, A.

F. He, C. Ruiz, and A. Becker, “Absorbing boundaries in numerical solutions of the time-dependent Schrödinger equation on a grid using exterior complex scaling,” Phys. Rev. A 75(5), 053407 (2007).
[Crossref]

Bian, X. B.

X. B. Bian, “Photoionization of atoms and molecules studied by the Crank-Nicolson method,” Phys. Rev. A 90(3), 033403 (2014).
[Crossref]

X. B. Bian, L. Y. Peng, and T. Y. Shi, “Enhanced excitation and ionization of ${{\mathrm {H}}_{2}}^{+}$H2+ by a single- and two-color intense laser pulse,” Phys. Rev. A 77(6), 063415 (2008).
[Crossref]

Buccheri, F.

F. Buccheri, P. Huang, and X. Zhang, “Generation and detection of pulsed terahertz waves in gas: from elongated plasmas to microplasmas,” Front. Optoelectron. 11(3), 209–244 (2018).
[Crossref]

Bukin, V. V.

A. A. Ushakov, N. A. Panov, P. A. Chizhov, D. E. Shipilo, V. V. Bukin, A. B. Savelev, S. V. Garnov, and O. G. Kosareva, “Waveform, spectrum, and energy of backward terahertz emission from two-color femtosecond laser induced microplasma,” Appl. Phys. Lett. 114(8), 081102 (2019).
[Crossref]

Chateauneuf, M.

T. Wang, C. Marceau, Y. Chen, S. Yuan, F. Theberge, M. Chateauneuf, J. Dubois, and S. L. Chin, “Terahertz emission from a dc-biased two- color femtosecond laser-induced filament in air,” Appl. Phys. Lett. 96(21), 211113 (2010).
[Crossref]

Chelkowski, S.

K. Yuan, S. Chelkowski, and A. D. Bandrauk, “Rotations of molecular photoelectron angular distributions in above threshold ionization of ${\mathrm {H}}_{2}^{+}$H2+ by intense circularly polarized attosecond UV laser pulses,” J. Phys. B 47(20), 204009 (2014).
[Crossref]

S. Chelkowski, C. Foisy, and A. D. Bandrauk, “Electron-nuclear dynamics of multiphoton ${\mathrm {H}}_{2}^{+}$H2+ dissociative ionization in intense laser fields,” Phys. Rev. A 57(2), 1176–1185 (1998).
[Crossref]

Chen, W.

W. Chen, Y. Huang, C. Meng, J. Liu, Z. Zhou, D. Zhang, J. Yuan, and Z. Zhao, “Theoretical study of terahertz generation from atoms and aligned molecules driven by two-color laser fields,” Phys. Rev. A 92(3), 033410 (2015).
[Crossref]

Chen, Y.

T. Wang, C. Marceau, Y. Chen, S. Yuan, F. Theberge, M. Chateauneuf, J. Dubois, and S. L. Chin, “Terahertz emission from a dc-biased two- color femtosecond laser-induced filament in air,” Appl. Phys. Lett. 96(21), 211113 (2010).
[Crossref]

Chin, S. L.

T. Wang, C. Marceau, Y. Chen, S. Yuan, F. Theberge, M. Chateauneuf, J. Dubois, and S. L. Chin, “Terahertz emission from a dc-biased two- color femtosecond laser-induced filament in air,” Appl. Phys. Lett. 96(21), 211113 (2010).
[Crossref]

Chizhov, P. A.

A. A. Ushakov, N. A. Panov, P. A. Chizhov, D. E. Shipilo, V. V. Bukin, A. B. Savelev, S. V. Garnov, and O. G. Kosareva, “Waveform, spectrum, and energy of backward terahertz emission from two-color femtosecond laser induced microplasma,” Appl. Phys. Lett. 114(8), 081102 (2019).
[Crossref]

Dai, H.

H. Dai and J. Liu, “Terahertz emission dependence on the irradiating laser pulse width in generating terahertz waves from two-color laser-induced gas plasma,” J. Mod. Opt. 58(10), 859–864 (2011).
[Crossref]

Dai, J.

J. Dai, N. Karpowicz, and X. Zhang, “Coherent Polarization Control of Terahertz Waves Generated from Two-Color Laser-Induced Gas Plasma,” Phys. Rev. Lett. 103(2), 023001 (2009).
[Crossref]

Delone, N. B.

M. V. Ammosov, N. B. Delone, and V. P. Krainov, “Tunnel ionization of complex atoms and of atomic ions in an alternating electromagnetic field,” Zh. Eksp. Teor. Fiz. 91, 2008 (1986) [Sov. Phys. JETP 64, 1191 (1986)].

Du, H.

H. Du, H. Wang, and B. Hu, “Supercontinuous high harmonic generation from asymmetric molecules in the presence of a terahertz field,” Chin. Phys. B 20(4), 044207 (2011).
[Crossref]

Du, L.

L. Du, S. Zhao, X. Zhou, and Z. Zhao, “THz wave emission from argon in two-color laser field,” Chin. Phys. B 24(4), 043203 (2015).
[Crossref]

Dubois, J.

T. Wang, C. Marceau, Y. Chen, S. Yuan, F. Theberge, M. Chateauneuf, J. Dubois, and S. L. Chin, “Terahertz emission from a dc-biased two- color femtosecond laser-induced filament in air,” Appl. Phys. Lett. 96(21), 211113 (2010).
[Crossref]

Engel, V.

M. Lein, T. Kreibich, E. K. U. Gross, and V. Engel, “Strong-field ionization dynamics of a model H2 molecule,” Phys. Rev. A 65(3), 033403 (2002).
[Crossref]

Feit, M. D.

M. D. Feit, J. A. Fleck, and A. Steiger, “Solution of the Schrödinger Equation by a Spectral Method,” J. Comput. Phys. 47(3), 412–433 (1982).
[Crossref]

Fleck, J. A.

M. D. Feit, J. A. Fleck, and A. Steiger, “Solution of the Schrödinger Equation by a Spectral Method,” J. Comput. Phys. 47(3), 412–433 (1982).
[Crossref]

Foisy, C.

S. Chelkowski, C. Foisy, and A. D. Bandrauk, “Electron-nuclear dynamics of multiphoton ${\mathrm {H}}_{2}^{+}$H2+ dissociative ionization in intense laser fields,” Phys. Rev. A 57(2), 1176–1185 (1998).
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A. A. Ushakov, N. A. Panov, P. A. Chizhov, D. E. Shipilo, V. V. Bukin, A. B. Savelev, S. V. Garnov, and O. G. Kosareva, “Waveform, spectrum, and energy of backward terahertz emission from two-color femtosecond laser induced microplasma,” Appl. Phys. Lett. 114(8), 081102 (2019).
[Crossref]

Glownia, J. H.

Gonoskov, A. A.

A. A. Gonoskov, I. A. Gonoskov, M. Y. Ryabikin, and A. M. Sergeev, “Diffraction imaging of a diatomic molecule using recolliding electrons: Role of Coulomb potential and nuclear motion,” Phys. Rev. A 77(3), 033424 (2008).
[Crossref]

Gonoskov, I. A.

A. A. Gonoskov, I. A. Gonoskov, M. Y. Ryabikin, and A. M. Sergeev, “Diffraction imaging of a diatomic molecule using recolliding electrons: Role of Coulomb potential and nuclear motion,” Phys. Rev. A 77(3), 033424 (2008).
[Crossref]

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M. Lein, T. Kreibich, E. K. U. Gross, and V. Engel, “Strong-field ionization dynamics of a model H2 molecule,” Phys. Rev. A 65(3), 033403 (2002).
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He, F.

F. He, C. Ruiz, and A. Becker, “Absorbing boundaries in numerical solutions of the time-dependent Schrödinger equation on a grid using exterior complex scaling,” Phys. Rev. A 75(5), 053407 (2007).
[Crossref]

He, T.

C. Lu, T. He, L. Zhang, H. Zhang, Y. Yao, S. Li, and S. Zhang, “Effect of two-color laser pulse duration on intense terahertz generation at different laser intensities,” Phys. Rev. A 92(6), 063850 (2015).
[Crossref]

Houard, A.

A. Houard, Y. Liu, B. Prade, V. Tikhonchuk, and A. Mysyrowicz, “Strong Enhancement of Terahertz Radiation from Laser Filaments in Air by a Static Electric Field,” Phys. Rev. Lett. 100(25), 255006 (2008).
[Crossref]

Hu, B.

H. Du, H. Wang, and B. Hu, “Supercontinuous high harmonic generation from asymmetric molecules in the presence of a terahertz field,” Chin. Phys. B 20(4), 044207 (2011).
[Crossref]

Huang, P.

F. Buccheri, P. Huang, and X. Zhang, “Generation and detection of pulsed terahertz waves in gas: from elongated plasmas to microplasmas,” Front. Optoelectron. 11(3), 209–244 (2018).
[Crossref]

Huang, Y.

W. Chen, Y. Huang, C. Meng, J. Liu, Z. Zhou, D. Zhang, J. Yuan, and Z. Zhao, “Theoretical study of terahertz generation from atoms and aligned molecules driven by two-color laser fields,” Phys. Rev. A 92(3), 033410 (2015).
[Crossref]

Jacob, F.

T. Loffler, F. Jacob, and H. G. Roskos, “Generation of terahertz pulses by photoionization of electrically biased air Generation of terahertz pulses by photoionization of electrically biased air,” Appl. Phys. Lett. 77(3), 453–455 (2000).
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Jafari, S.

Jiang, Y. H.

K. Zhang, Y. Zhang, T.-M. Yan, and Y. H. Jiang, “Terahertz generation in dual-color laser: continuum electron in strong-field single-atom ionization,” arXiv:1805.12127.

Karpowicz, N.

J. Dai, N. Karpowicz, and X. Zhang, “Coherent Polarization Control of Terahertz Waves Generated from Two-Color Laser-Induced Gas Plasma,” Phys. Rev. Lett. 103(2), 023001 (2009).
[Crossref]

Kim, K.

K. Kim, “Generation of coherent terahertz radiation in ultrafast laser-gas interactions,” Phys. Plasmas 16(5), 056706 (2009).
[Crossref]

Kim, K. Y.

Kosareva, O. G.

A. A. Ushakov, N. A. Panov, P. A. Chizhov, D. E. Shipilo, V. V. Bukin, A. B. Savelev, S. V. Garnov, and O. G. Kosareva, “Waveform, spectrum, and energy of backward terahertz emission from two-color femtosecond laser induced microplasma,” Appl. Phys. Lett. 114(8), 081102 (2019).
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M. V. Ammosov, N. B. Delone, and V. P. Krainov, “Tunnel ionization of complex atoms and of atomic ions in an alternating electromagnetic field,” Zh. Eksp. Teor. Fiz. 91, 2008 (1986) [Sov. Phys. JETP 64, 1191 (1986)].

Krause, J. L.

J. L. Krause, K. J. Schafer, and K. C. Kulander, “Calculation of photoemission from atoms subject to intense laser fields,” Phys. Rev. A 45(7), 4998–5010 (1992).
[Crossref]

Kreibich, T.

M. Lein, T. Kreibich, E. K. U. Gross, and V. Engel, “Strong-field ionization dynamics of a model H2 molecule,” Phys. Rev. A 65(3), 033403 (2002).
[Crossref]

Kulander, K. C.

J. L. Krause, K. J. Schafer, and K. C. Kulander, “Calculation of photoemission from atoms subject to intense laser fields,” Phys. Rev. A 45(7), 4998–5010 (1992).
[Crossref]

Lein, M.

M. Lein, T. Kreibich, E. K. U. Gross, and V. Engel, “Strong-field ionization dynamics of a model H2 molecule,” Phys. Rev. A 65(3), 033403 (2002).
[Crossref]

Li, S.

C. Lu, T. He, L. Zhang, H. Zhang, Y. Yao, S. Li, and S. Zhang, “Effect of two-color laser pulse duration on intense terahertz generation at different laser intensities,” Phys. Rev. A 92(6), 063850 (2015).
[Crossref]

Li, Y.

W. Wang, Z. Sheng, Y. Li, Y. Zhang, and J. Zhang, “Terahertz emission driven by two-color laser pulses at various frequency ratios,” Phys. Rev. A 96(2), 023844 (2017).
[Crossref]

Lin, C. D.

X. M. Tong, Z. X. Zhao, and C. D. Lin, “Theory of molecular tunneling ionization,” Phys. Rev. A 66(3), 033402 (2002).
[Crossref]

Liu, J.

W. Chen, Y. Huang, C. Meng, J. Liu, Z. Zhou, D. Zhang, J. Yuan, and Z. Zhao, “Theoretical study of terahertz generation from atoms and aligned molecules driven by two-color laser fields,” Phys. Rev. A 92(3), 033410 (2015).
[Crossref]

H. Dai and J. Liu, “Terahertz emission dependence on the irradiating laser pulse width in generating terahertz waves from two-color laser-induced gas plasma,” J. Mod. Opt. 58(10), 859–864 (2011).
[Crossref]

Liu, W.

Liu, Y.

A. Houard, Y. Liu, B. Prade, V. Tikhonchuk, and A. Mysyrowicz, “Strong Enhancement of Terahertz Radiation from Laser Filaments in Air by a Static Electric Field,” Phys. Rev. Lett. 100(25), 255006 (2008).
[Crossref]

Loffler, T.

T. Loffler, F. Jacob, and H. G. Roskos, “Generation of terahertz pulses by photoionization of electrically biased air Generation of terahertz pulses by photoionization of electrically biased air,” Appl. Phys. Lett. 77(3), 453–455 (2000).
[Crossref]

Lu, C.

C. Lu, T. He, L. Zhang, H. Zhang, Y. Yao, S. Li, and S. Zhang, “Effect of two-color laser pulse duration on intense terahertz generation at different laser intensities,” Phys. Rev. A 92(6), 063850 (2015).
[Crossref]

Marceau, C.

T. Wang, C. Marceau, Y. Chen, S. Yuan, F. Theberge, M. Chateauneuf, J. Dubois, and S. L. Chin, “Terahertz emission from a dc-biased two- color femtosecond laser-induced filament in air,” Appl. Phys. Lett. 96(21), 211113 (2010).
[Crossref]

Meng, C.

W. Chen, Y. Huang, C. Meng, J. Liu, Z. Zhou, D. Zhang, J. Yuan, and Z. Zhao, “Theoretical study of terahertz generation from atoms and aligned molecules driven by two-color laser fields,” Phys. Rev. A 92(3), 033410 (2015).
[Crossref]

Miao, C.

C. Miao, J. P. Palastro, and T. M. Antonsen, “High-power tunable laser driven THz generation in corrugated plasma waveguides,” Phys. Plasmas 24(4), 043109 (2017).
[Crossref]

Mysyrowicz, A.

A. Houard, Y. Liu, B. Prade, V. Tikhonchuk, and A. Mysyrowicz, “Strong Enhancement of Terahertz Radiation from Laser Filaments in Air by a Static Electric Field,” Phys. Rev. Lett. 100(25), 255006 (2008).
[Crossref]

Palastro, J. P.

C. Miao, J. P. Palastro, and T. M. Antonsen, “High-power tunable laser driven THz generation in corrugated plasma waveguides,” Phys. Plasmas 24(4), 043109 (2017).
[Crossref]

Panov, N. A.

A. A. Ushakov, N. A. Panov, P. A. Chizhov, D. E. Shipilo, V. V. Bukin, A. B. Savelev, S. V. Garnov, and O. G. Kosareva, “Waveform, spectrum, and energy of backward terahertz emission from two-color femtosecond laser induced microplasma,” Appl. Phys. Lett. 114(8), 081102 (2019).
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Peng, L. Y.

X. B. Bian, L. Y. Peng, and T. Y. Shi, “Enhanced excitation and ionization of ${{\mathrm {H}}_{2}}^{+}$H2+ by a single- and two-color intense laser pulse,” Phys. Rev. A 77(6), 063415 (2008).
[Crossref]

Prade, B.

A. Houard, Y. Liu, B. Prade, V. Tikhonchuk, and A. Mysyrowicz, “Strong Enhancement of Terahertz Radiation from Laser Filaments in Air by a Static Electric Field,” Phys. Rev. Lett. 100(25), 255006 (2008).
[Crossref]

Rodriguez, G.

Roskos, H. G.

T. Loffler, F. Jacob, and H. G. Roskos, “Generation of terahertz pulses by photoionization of electrically biased air Generation of terahertz pulses by photoionization of electrically biased air,” Appl. Phys. Lett. 77(3), 453–455 (2000).
[Crossref]

Ruiz, C.

F. He, C. Ruiz, and A. Becker, “Absorbing boundaries in numerical solutions of the time-dependent Schrödinger equation on a grid using exterior complex scaling,” Phys. Rev. A 75(5), 053407 (2007).
[Crossref]

Ryabikin, M. Y.

A. A. Silaev, M. Y. Ryabikin, and N. V. Vvedenskii, “Strong-field phenomena caused by ultrashort laser pulses: Effective one- and two-dimensional quantum-mechanical descriptions,” Phys. Rev. A 82(3), 033416 (2010).
[Crossref]

A. A. Gonoskov, I. A. Gonoskov, M. Y. Ryabikin, and A. M. Sergeev, “Diffraction imaging of a diatomic molecule using recolliding electrons: Role of Coulomb potential and nuclear motion,” Phys. Rev. A 77(3), 033424 (2008).
[Crossref]

Savelev, A. B.

A. A. Ushakov, N. A. Panov, P. A. Chizhov, D. E. Shipilo, V. V. Bukin, A. B. Savelev, S. V. Garnov, and O. G. Kosareva, “Waveform, spectrum, and energy of backward terahertz emission from two-color femtosecond laser induced microplasma,” Appl. Phys. Lett. 114(8), 081102 (2019).
[Crossref]

Schafer, K. J.

J. L. Krause, K. J. Schafer, and K. C. Kulander, “Calculation of photoemission from atoms subject to intense laser fields,” Phys. Rev. A 45(7), 4998–5010 (1992).
[Crossref]

Sergeev, A. M.

A. A. Gonoskov, I. A. Gonoskov, M. Y. Ryabikin, and A. M. Sergeev, “Diffraction imaging of a diatomic molecule using recolliding electrons: Role of Coulomb potential and nuclear motion,” Phys. Rev. A 77(3), 033424 (2008).
[Crossref]

Sheng, Z.

W. Wang, Z. Sheng, Y. Li, Y. Zhang, and J. Zhang, “Terahertz emission driven by two-color laser pulses at various frequency ratios,” Phys. Rev. A 96(2), 023844 (2017).
[Crossref]

Shi, T. Y.

X. B. Bian, L. Y. Peng, and T. Y. Shi, “Enhanced excitation and ionization of ${{\mathrm {H}}_{2}}^{+}$H2+ by a single- and two-color intense laser pulse,” Phys. Rev. A 77(6), 063415 (2008).
[Crossref]

Shipilo, D. E.

A. A. Ushakov, N. A. Panov, P. A. Chizhov, D. E. Shipilo, V. V. Bukin, A. B. Savelev, S. V. Garnov, and O. G. Kosareva, “Waveform, spectrum, and energy of backward terahertz emission from two-color femtosecond laser induced microplasma,” Appl. Phys. Lett. 114(8), 081102 (2019).
[Crossref]

Silaev, A. A.

A. A. Silaev, M. Y. Ryabikin, and N. V. Vvedenskii, “Strong-field phenomena caused by ultrashort laser pulses: Effective one- and two-dimensional quantum-mechanical descriptions,” Phys. Rev. A 82(3), 033416 (2010).
[Crossref]

A. A. Silaev and N. V. Vvedenskii, “Residual-Current Excitation in Plasmas Produced by Few-Cycle Laser Pulses,” Phys. Rev. Lett. 102(11), 115005 (2009).
[Crossref]

Steiger, A.

M. D. Feit, J. A. Fleck, and A. Steiger, “Solution of the Schrödinger Equation by a Spectral Method,” J. Comput. Phys. 47(3), 412–433 (1982).
[Crossref]

Su, Q.

Taylor, A. J.

Theberge, F.

T. Wang, C. Marceau, Y. Chen, S. Yuan, F. Theberge, M. Chateauneuf, J. Dubois, and S. L. Chin, “Terahertz emission from a dc-biased two- color femtosecond laser-induced filament in air,” Appl. Phys. Lett. 96(21), 211113 (2010).
[Crossref]

Tikhonchuk, V.

A. Houard, Y. Liu, B. Prade, V. Tikhonchuk, and A. Mysyrowicz, “Strong Enhancement of Terahertz Radiation from Laser Filaments in Air by a Static Electric Field,” Phys. Rev. Lett. 100(25), 255006 (2008).
[Crossref]

Tong, X. M.

X. M. Tong, Z. X. Zhao, and C. D. Lin, “Theory of molecular tunneling ionization,” Phys. Rev. A 66(3), 033402 (2002).
[Crossref]

Ushakov, A. A.

A. A. Ushakov, N. A. Panov, P. A. Chizhov, D. E. Shipilo, V. V. Bukin, A. B. Savelev, S. V. Garnov, and O. G. Kosareva, “Waveform, spectrum, and energy of backward terahertz emission from two-color femtosecond laser induced microplasma,” Appl. Phys. Lett. 114(8), 081102 (2019).
[Crossref]

Vvedenskii, N. V.

A. A. Silaev, M. Y. Ryabikin, and N. V. Vvedenskii, “Strong-field phenomena caused by ultrashort laser pulses: Effective one- and two-dimensional quantum-mechanical descriptions,” Phys. Rev. A 82(3), 033416 (2010).
[Crossref]

A. A. Silaev and N. V. Vvedenskii, “Residual-Current Excitation in Plasmas Produced by Few-Cycle Laser Pulses,” Phys. Rev. Lett. 102(11), 115005 (2009).
[Crossref]

Wang, G.

L. Zhang, G. Wang, and X. Zhou, “Optimized two- and three-colour laser pulses for the intense terahertz wave generation,” J. Mod. Opt. 63(21), 2159–2165 (2016).
[Crossref]

Wang, H.

H. Du, H. Wang, and B. Hu, “Supercontinuous high harmonic generation from asymmetric molecules in the presence of a terahertz field,” Chin. Phys. B 20(4), 044207 (2011).
[Crossref]

Wang, T.

T. Wang, C. Marceau, Y. Chen, S. Yuan, F. Theberge, M. Chateauneuf, J. Dubois, and S. L. Chin, “Terahertz emission from a dc-biased two- color femtosecond laser-induced filament in air,” Appl. Phys. Lett. 96(21), 211113 (2010).
[Crossref]

Wang, W.

W. Wang, Z. Sheng, Y. Li, Y. Zhang, and J. Zhang, “Terahertz emission driven by two-color laser pulses at various frequency ratios,” Phys. Rev. A 96(2), 023844 (2017).
[Crossref]

Xu, Q.

Yan, T.-M.

K. Zhang, Y. Zhang, T.-M. Yan, and Y. H. Jiang, “Terahertz generation in dual-color laser: continuum electron in strong-field single-atom ionization,” arXiv:1805.12127.

Yao, Y.

C. Lu, T. He, L. Zhang, H. Zhang, Y. Yao, S. Li, and S. Zhang, “Effect of two-color laser pulse duration on intense terahertz generation at different laser intensities,” Phys. Rev. A 92(6), 063850 (2015).
[Crossref]

Yuan, J.

W. Chen, Y. Huang, C. Meng, J. Liu, Z. Zhou, D. Zhang, J. Yuan, and Z. Zhao, “Theoretical study of terahertz generation from atoms and aligned molecules driven by two-color laser fields,” Phys. Rev. A 92(3), 033410 (2015).
[Crossref]

Z. Zhou, D. Zhang, Z. Zhao, and J. Yuan, “Terahertz emission of atoms driven by ultrashort laser pulses,” Phys. Rev. A 79(6), 063413 (2009).
[Crossref]

Yuan, K.

K. Yuan, S. Chelkowski, and A. D. Bandrauk, “Rotations of molecular photoelectron angular distributions in above threshold ionization of ${\mathrm {H}}_{2}^{+}$H2+ by intense circularly polarized attosecond UV laser pulses,” J. Phys. B 47(20), 204009 (2014).
[Crossref]

K. Yuan and A. D. Bandrauk, “Single Circularly Polarized Attosecond Pulse Generation by Intense Few Cycle Elliptically Polarized Laser Pulses and Terahertz Fields from Molecular Media,” Phys. Rev. Lett. 110(2), 023003 (2013).
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K. Yuan and A. D. Bandrauk, “Molecular above-threshold-ionization angular distributions with attosecond bichromatic intense XUV laser pulses,” Phys. Rev. A 85(1), 013413 (2012).
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K. Yuan and A. D. Bandrauk, “Circularly polarized molecular high-order harmonic generation in ${{\mathrm {H}}_{2}}^{+}$H2+ with intense laser pulses and static fields,” Phys. Rev. A 83(6), 063422 (2011).
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K. Yuan and A. D. Bandrauk, “Angle-dependent molecular above-threshold ionization with ultrashort intense linearly and circularly polarized laser pulses,” Phys. Rev. A 84(1), 013426 (2011).
[Crossref]

Yuan, S.

T. Wang, C. Marceau, Y. Chen, S. Yuan, F. Theberge, M. Chateauneuf, J. Dubois, and S. L. Chin, “Terahertz emission from a dc-biased two- color femtosecond laser-induced filament in air,” Appl. Phys. Lett. 96(21), 211113 (2010).
[Crossref]

Zhang, D.

W. Chen, Y. Huang, C. Meng, J. Liu, Z. Zhou, D. Zhang, J. Yuan, and Z. Zhao, “Theoretical study of terahertz generation from atoms and aligned molecules driven by two-color laser fields,” Phys. Rev. A 92(3), 033410 (2015).
[Crossref]

Z. Zhou, D. Zhang, Z. Zhao, and J. Yuan, “Terahertz emission of atoms driven by ultrashort laser pulses,” Phys. Rev. A 79(6), 063413 (2009).
[Crossref]

Zhang, H.

C. Lu, T. He, L. Zhang, H. Zhang, Y. Yao, S. Li, and S. Zhang, “Effect of two-color laser pulse duration on intense terahertz generation at different laser intensities,” Phys. Rev. A 92(6), 063850 (2015).
[Crossref]

Zhang, J.

W. Wang, Z. Sheng, Y. Li, Y. Zhang, and J. Zhang, “Terahertz emission driven by two-color laser pulses at various frequency ratios,” Phys. Rev. A 96(2), 023844 (2017).
[Crossref]

Zhang, K.

K. Zhang, Y. Zhang, T.-M. Yan, and Y. H. Jiang, “Terahertz generation in dual-color laser: continuum electron in strong-field single-atom ionization,” arXiv:1805.12127.

Zhang, L.

L. Zhang, G. Wang, and X. Zhou, “Optimized two- and three-colour laser pulses for the intense terahertz wave generation,” J. Mod. Opt. 63(21), 2159–2165 (2016).
[Crossref]

C. Lu, T. He, L. Zhang, H. Zhang, Y. Yao, S. Li, and S. Zhang, “Effect of two-color laser pulse duration on intense terahertz generation at different laser intensities,” Phys. Rev. A 92(6), 063850 (2015).
[Crossref]

Zhang, N.

Zhang, S.

C. Lu, T. He, L. Zhang, H. Zhang, Y. Yao, S. Li, and S. Zhang, “Effect of two-color laser pulse duration on intense terahertz generation at different laser intensities,” Phys. Rev. A 92(6), 063850 (2015).
[Crossref]

Zhang, X.

F. Buccheri, P. Huang, and X. Zhang, “Generation and detection of pulsed terahertz waves in gas: from elongated plasmas to microplasmas,” Front. Optoelectron. 11(3), 209–244 (2018).
[Crossref]

J. Dai, N. Karpowicz, and X. Zhang, “Coherent Polarization Control of Terahertz Waves Generated from Two-Color Laser-Induced Gas Plasma,” Phys. Rev. Lett. 103(2), 023001 (2009).
[Crossref]

Zhang, Y.

Q. Su, Q. Xu, N. Zhang, Y. Zhang, and W. Liu, “Control of terahertz pulse polarization by two crossing DC fields during femtosecond laser filamentation in air,” J. Opt. Soc. Am. B 36(10), G1–G5 (2019).
[Crossref]

W. Wang, Z. Sheng, Y. Li, Y. Zhang, and J. Zhang, “Terahertz emission driven by two-color laser pulses at various frequency ratios,” Phys. Rev. A 96(2), 023844 (2017).
[Crossref]

K. Zhang, Y. Zhang, T.-M. Yan, and Y. H. Jiang, “Terahertz generation in dual-color laser: continuum electron in strong-field single-atom ionization,” arXiv:1805.12127.

Zhao, S.

L. Du, S. Zhao, X. Zhou, and Z. Zhao, “THz wave emission from argon in two-color laser field,” Chin. Phys. B 24(4), 043203 (2015).
[Crossref]

Zhao, Z.

L. Du, S. Zhao, X. Zhou, and Z. Zhao, “THz wave emission from argon in two-color laser field,” Chin. Phys. B 24(4), 043203 (2015).
[Crossref]

W. Chen, Y. Huang, C. Meng, J. Liu, Z. Zhou, D. Zhang, J. Yuan, and Z. Zhao, “Theoretical study of terahertz generation from atoms and aligned molecules driven by two-color laser fields,” Phys. Rev. A 92(3), 033410 (2015).
[Crossref]

Z. Zhou, D. Zhang, Z. Zhao, and J. Yuan, “Terahertz emission of atoms driven by ultrashort laser pulses,” Phys. Rev. A 79(6), 063413 (2009).
[Crossref]

Zhao, Z. X.

X. M. Tong, Z. X. Zhao, and C. D. Lin, “Theory of molecular tunneling ionization,” Phys. Rev. A 66(3), 033402 (2002).
[Crossref]

Zhou, X.

L. Zhang, G. Wang, and X. Zhou, “Optimized two- and three-colour laser pulses for the intense terahertz wave generation,” J. Mod. Opt. 63(21), 2159–2165 (2016).
[Crossref]

L. Du, S. Zhao, X. Zhou, and Z. Zhao, “THz wave emission from argon in two-color laser field,” Chin. Phys. B 24(4), 043203 (2015).
[Crossref]

Zhou, Z.

W. Chen, Y. Huang, C. Meng, J. Liu, Z. Zhou, D. Zhang, J. Yuan, and Z. Zhao, “Theoretical study of terahertz generation from atoms and aligned molecules driven by two-color laser fields,” Phys. Rev. A 92(3), 033410 (2015).
[Crossref]

Z. Zhou, D. Zhang, Z. Zhao, and J. Yuan, “Terahertz emission of atoms driven by ultrashort laser pulses,” Phys. Rev. A 79(6), 063413 (2009).
[Crossref]

Appl. Phys. Lett. (3)

T. Loffler, F. Jacob, and H. G. Roskos, “Generation of terahertz pulses by photoionization of electrically biased air Generation of terahertz pulses by photoionization of electrically biased air,” Appl. Phys. Lett. 77(3), 453–455 (2000).
[Crossref]

T. Wang, C. Marceau, Y. Chen, S. Yuan, F. Theberge, M. Chateauneuf, J. Dubois, and S. L. Chin, “Terahertz emission from a dc-biased two- color femtosecond laser-induced filament in air,” Appl. Phys. Lett. 96(21), 211113 (2010).
[Crossref]

A. A. Ushakov, N. A. Panov, P. A. Chizhov, D. E. Shipilo, V. V. Bukin, A. B. Savelev, S. V. Garnov, and O. G. Kosareva, “Waveform, spectrum, and energy of backward terahertz emission from two-color femtosecond laser induced microplasma,” Appl. Phys. Lett. 114(8), 081102 (2019).
[Crossref]

Chin. Phys. B (2)

H. Du, H. Wang, and B. Hu, “Supercontinuous high harmonic generation from asymmetric molecules in the presence of a terahertz field,” Chin. Phys. B 20(4), 044207 (2011).
[Crossref]

L. Du, S. Zhao, X. Zhou, and Z. Zhao, “THz wave emission from argon in two-color laser field,” Chin. Phys. B 24(4), 043203 (2015).
[Crossref]

Front. Optoelectron. (1)

F. Buccheri, P. Huang, and X. Zhang, “Generation and detection of pulsed terahertz waves in gas: from elongated plasmas to microplasmas,” Front. Optoelectron. 11(3), 209–244 (2018).
[Crossref]

J. Comput. Phys. (1)

M. D. Feit, J. A. Fleck, and A. Steiger, “Solution of the Schrödinger Equation by a Spectral Method,” J. Comput. Phys. 47(3), 412–433 (1982).
[Crossref]

J. Mod. Opt. (2)

H. Dai and J. Liu, “Terahertz emission dependence on the irradiating laser pulse width in generating terahertz waves from two-color laser-induced gas plasma,” J. Mod. Opt. 58(10), 859–864 (2011).
[Crossref]

L. Zhang, G. Wang, and X. Zhou, “Optimized two- and three-colour laser pulses for the intense terahertz wave generation,” J. Mod. Opt. 63(21), 2159–2165 (2016).
[Crossref]

J. Opt. Soc. Am. B (2)

J. Phys. B (1)

K. Yuan, S. Chelkowski, and A. D. Bandrauk, “Rotations of molecular photoelectron angular distributions in above threshold ionization of ${\mathrm {H}}_{2}^{+}$H2+ by intense circularly polarized attosecond UV laser pulses,” J. Phys. B 47(20), 204009 (2014).
[Crossref]

Opt. Express (1)

Phys. Plasmas (3)

C. Miao, J. P. Palastro, and T. M. Antonsen, “High-power tunable laser driven THz generation in corrugated plasma waveguides,” Phys. Plasmas 24(4), 043109 (2017).
[Crossref]

K. Kim, “Generation of coherent terahertz radiation in ultrafast laser-gas interactions,” Phys. Plasmas 16(5), 056706 (2009).
[Crossref]

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Other (1)

K. Zhang, Y. Zhang, T.-M. Yan, and Y. H. Jiang, “Terahertz generation in dual-color laser: continuum electron in strong-field single-atom ionization,” arXiv:1805.12127.

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Figures (5)

Fig. 1.
Fig. 1. $\left ( a \right )$ Current distribution in a two-color laser field. The black solid line is the current along the - $x$ direction. The red-dashed line represents the current along the + $x$ direction. The blue-dotted line is the total current. $\left ( b \right )$ Quantum interference effect in THz radiation. The red-dashed line presents the total THz spectrum by TDSE. The black solid line shows the results with electron-wave phases ignored. The blue-dotted line shows the results by removing the contribution of the first excited state. The green-dashed-dotted line is the results by classical photocurrent model.
Fig. 2.
Fig. 2. The effect of electrostatic field on the THz emission in the monochromatic laser field. The black solid line represents the result by adding an electrostatic field. The red dashed-dotted line illustrates the THz emission by the monochromatic laser field alone.
Fig. 3.
Fig. 3. The effect of electrostatic field on the THz emission in the two-color ( $1\omega +2\omega$ ) laser fields. The phase of two-color laser fields is $\theta=0$ . The black solid line represents the result by adding an electrostatic field. The red dashed-dotted line illustrates the THz emission without the static field.
Fig. 4.
Fig. 4. The effect of electrostatic field on the THz emission in the two-color ( $1\omega +3\omega$ ) laser fields. The Phase of two-color laser fields is $\theta =0.5$ $\pi$ . The black solid line represents the result by adding an electrostatic field. The red dashed-dotted line illustrates the THz emission without the static field
Fig. 5.
Fig. 5. $\left (a\right )$ THz yield as a function of the electric field strength. $\left (b\right )$ The asymmetry factor $\beta$ as a function of the electric field strength. For each group of data, the integration range is 0-50 THz. The laser used is a monochromatic field. The laser parameters are the same as those in Fig. 2.

Equations (20)

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E ( t ) = E ω exp ( 4 ln 2 t 2 / T 2   ) cos ( ω t ) + E e .
E ( t ) = E ω exp ( 4 ln 2 t 2 / T 2 ) cos ( ω t ) + E n ω exp ( 4 ln 2 t 2 / T 2 ) cos ( n ω t + θ ) + E e ,
w ( t ) = 4 w 0 ( E N 2 E H ) 5 / 2 E a | E ( t ) | exp [ 2 3 ( E N 2 E H ) 3 / 2 E a | E ( t ) | ] ,
v ( t ) = e m e t 0 t E ( t ) d t ,
d N e ( t 0 ) = ( N g N e ( t 0 ) ) w ( t 0 ) d t 0 ,
d N e ( t 0 ) = N g w ( t 0 ) d t 0 .
d J ( t ) = e v ( t ) d N e ( t ) .
P ( Ω ) = | t s t f d J ( t ) d t exp i Ω t d t | 2 ,
i t ψ ( x , t ) = H ψ ( x , t ) .
H = 1 2 d 2 d x 2 + V ( x ) + x E ( t ) ,
V ( x ) = 0.5 ( x R 2 ) 2 + α 0.5 ( x + R 2 ) 2 + α
ψ ( x , t ) = ψ i n ( x , t ) + ψ e x ( x , t ) ,
ψ i n ( x , t ) = f a b s ψ ( x , t ) ,
ψ e x ( x , t ) = ( 1 f a b s ) ψ ( x , t ) ,
ψ v ( x , t ) = exp [ i A ( t ) x ] ψ e x ( x , t ) ,
φ v ( p , t 2 ) = U ( t 2 , t 1 ) φ v ( p , t 1 ) ,
U ( t 2 , t 1 ) = exp [ i 2 t 1 t 2 [ p 2 + 2 A ( t ) p + A ( t ) 2 ] d t ] .
d v ( t ) = < φ ( p , t ) | p ^ + A ( t ) | φ ( p , t ) > .
P ( Ω ) = | t s t f d v ( t ) exp i Ω t d t | 2 .
β = J ω + J ω J ω + + J ω ,

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