Abstract

We have investigated resonance effects in high-order harmonic generation (HHG) within laser-produced plasmas. We demonstrate a significantly improved harmonic yield by using two-color pump-induced enhancement and a 1 kHz pulse repetition rate. Together with an increased HHG output, the even harmonics in the cutoff region were enhanced with respect to odd harmonics. We report the observation of a resonance-induced growth in intensity of 20th harmonic in silver plasma (2×), 26th harmonic in vanadium plasma (4×), and 28th harmonic in chromium plasma (5×).

© 2011 OSA

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    [CrossRef]
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    [CrossRef] [PubMed]
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    [CrossRef]
  34. I. J. Kim, C. M. Kim, H. T. Kim, G. H. Lee, Y. S. Lee, J. Y. Park, D. J. Cho, and C. H. Nam, “Highly efficient high-harmonic generation in an orthogonally polarized two-color laser field,” Phys. Rev. Lett. 94(24), 243901 (2005).
    [CrossRef]
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    [CrossRef]
  38. I. J. Kim, G. H. Lee, S. B. Park, Y. S. Lee, T. K. Kim, C. H. Nam, T. Mocek, and K. Jakubczak, “Generation of submicrojoule high harmonics using a long gas jet in a two-color laser field,” Appl. Phys. Lett. 92(2), 021125 (2008).
    [CrossRef]
  39. R. A. Ganeev, H. Singhal, P. A. Naik, I. A. Kulagin, P. V. Redkin, J. A. Chakera, M. Tayyab, R. A. Khan, and P. D. Gupta, “Enhancement of high-order harmonic generation using a two-color pump in plasma plumes,” Phys. Rev. A 80(3), 033845 (2009).
    [CrossRef]
  40. R. A. Ganeev, M. Suzuki, M. Baba, and H. Kuroda, “Harmonic generation from chromium plasma,” Appl. Phys. Lett. 86(13), 131116 (2005).
    [CrossRef]
  41. M. Suzuki, L. B. Elouga Bom, T. Ozaki, R. A. Ganeev, M. Baba, and H. Kuroda, “Seventy-first harmonic generation from doubly charged ions in preformed laser-ablation vanadium plume at 110 eV,” Opt. Express 15(7), 4112–4117 (2007).
    [CrossRef] [PubMed]
  42. C. McGuinness, M. Martins, P. Wernet, B. F. Sonntag, P. Kampen, J.-P. Mosnier, E. T. Kennedy, and J. T. Costello, “Metastable state contributions to the measured 3p photoabsorption spectrum of Cr+ ions in a laser-produced plasma,” J. Phys. B 32(20), L583–L591 (1999).
    [CrossRef]

2011 (3)

M. Tudorovskaya and M. Lein, “High-order harmonic generation in the presence of a resonance,” Phys. Rev. A 84(1), 013430 (2011).
[CrossRef]

R. A. Ganeev, C. Hutchison, T. Siegel, M. E. López-Arias, A. Zaïr, and J. P. Marangos, “High-order harmonic generation from metal plasmas using 1 kHz laser pulses,” J. Mod. Opt. 58(10), 819–824 (2011).
[CrossRef]

L. B. Elouga Bom, S. Haessler, O. Gobert, M. Perdrix, F. Lepetit, J. F. Hergott, B. Carré, T. Ozaki, and P. Salières, “Attosecond emission from chromium plasma,” Opt. Express 19(4), 3677–3685 (2011).
[CrossRef] [PubMed]

2010 (5)

T. Popmintchev, M.-C. Chen, P. Arpin, M. M. Murnane, and H. C. Kapteyn, “The attosecond nonlinear optics of bright coherent X-ray generation,” Nat. Photonics 4(12), 822–832 (2010).
[CrossRef]

R. A. Ganeev, H. Singhal, P. A. Naik, J. A. Chakera, H. S. Vora, R. A. Khan, and P. D. Gupta, “Systematic studies of two-color pump-induced high-order harmonic generation in plasma plumes,” Phys. Rev. A 82(5), 053831 (2010).
[CrossRef]

V. Strelkov, “Role of autoionizing state in resonant high-order harmonic generation and attosecond pulse production,” Phys. Rev. Lett. 104(12), 123901 (2010).
[CrossRef] [PubMed]

M. V. Frolov, N. L. Manakov, and A. F. Starace, “Potential barrier effects in high-order harmonic generation by transition-metal ions,” Phys. Rev. A 82(2), 023424 (2010).
[CrossRef]

D. B. Milošević, “Resonant high-order harmonic generation from plasma ablation: Laser intensity dependence of the harmonic intensity and phase,” Phys. Rev. A 81(2), 023802 (2010).
[CrossRef]

2009 (3)

R. A. Ganeev, “Generation of high-order harmonics of high-power lasers in plasmas produced under irradiation of solid target surfaces by a prepulse,” Phys. Usp. 52(1), 55–77 (2009).
[CrossRef]

R. A. Ganeev, H. Singhal, P. A. Naik, I. A. Kulagin, P. V. Redkin, J. A. Chakera, M. Tayyab, R. A. Khan, and P. D. Gupta, “Enhancement of high-order harmonic generation using a two-color pump in plasma plumes,” Phys. Rev. A 80(3), 033845 (2009).
[CrossRef]

I. A. Kulagin and T. Usmanov, “Efficient selection of single high-order harmonic caused by atomic autoionizing state influence,” Opt. Lett. 34(17), 2616–2618 (2009).
[CrossRef] [PubMed]

2008 (2)

D. Charalambidis, P. Tzallas, E. P. Benis, E. Skantzakis, G. Maravelias, L A A. Nikolopoulos, A. Peralta Conde, and G. D. Tsakiris, “Exploring intense attosecond pulses,” New J. Phys. 10(2), 025018 (2008).
[CrossRef]

I. J. Kim, G. H. Lee, S. B. Park, Y. S. Lee, T. K. Kim, C. H. Nam, T. Mocek, and K. Jakubczak, “Generation of submicrojoule high harmonics using a long gas jet in a two-color laser field,” Appl. Phys. Lett. 92(2), 021125 (2008).
[CrossRef]

2007 (6)

R. A. Ganeev, M. Suzuki, P. V. Redkin, M. Baba, and H. Kuroda, “Variable pattern of high-order harmonic spectra from a laser-produced plasma by using the chirped pulses of narrow-bandwidth radiation,” Phys. Rev. A 76(2), 023832 (2007).
[CrossRef]

R. A. Ganeev, “High-order harmonic generation in a laser plasma: a review of recent achievements,” J. Phys. B 40(22), R213–R253 (2007).
[CrossRef]

R. A. Ganeev, L. Bom, J.-C. Kieffer, and T. Ozaki, “Systematic investigation of resonance-induced single-harmonic enhancement in the extreme-ultraviolet range,” Phys. Rev. A 75(6), 063806 (2007).
[CrossRef]

R. A. Ganeev, P. A. Naik, H. Singhal, J. A. Chakera, and P. D. Gupta, “Strong enhancement and extinction of single harmonic intensity in the mid- and end-plateau regions of the high harmonics generated in weakly excited laser plasmas,” Opt. Lett. 32(1), 65–67 (2007).
[CrossRef] [PubMed]

M. Suzuki, M. Baba, H. Kuroda, R. A. Ganeev, and T. Ozaki, “Intense exact resonance enhancement of single-high-harmonic from an antimony ion by using Ti:Sapphire laser at 37 nm,” Opt. Express 15(3), 1161–1166 (2007).
[CrossRef] [PubMed]

M. Suzuki, L. B. Elouga Bom, T. Ozaki, R. A. Ganeev, M. Baba, and H. Kuroda, “Seventy-first harmonic generation from doubly charged ions in preformed laser-ablation vanadium plume at 110 eV,” Opt. Express 15(7), 4112–4117 (2007).
[CrossRef] [PubMed]

2006 (5)

2005 (3)

R. A. Ganeev, M. Suzuki, M. Baba, and H. Kuroda, “Harmonic generation from chromium plasma,” Appl. Phys. Lett. 86(13), 131116 (2005).
[CrossRef]

V. Tosa, H. T. Kim, I. J. Kim, and C. H. Nam, “High-order harmonic generation by chirped and self-guided femtosecond laser pulses. II. Time-frequency analysis,” Phys. Rev. A 71(6), 063808 (2005).
[CrossRef]

I. J. Kim, C. M. Kim, H. T. Kim, G. H. Lee, Y. S. Lee, J. Y. Park, D. J. Cho, and C. H. Nam, “Highly efficient high-harmonic generation in an orthogonally polarized two-color laser field,” Phys. Rev. Lett. 94(24), 243901 (2005).
[CrossRef]

2004 (2)

H. T. Kim, J. H. Kim, D. G. Lee, K. H. Hong, Y. S. Lee, V. Tosa, and C. H. Nam, “Optimization of high-order harmonic brightness in the space and time domains,” Phys. Rev. A 69(3), 031805 (2004).
[CrossRef]

D. H. Reitze, S. Kazamias, F. Weihe, G. Mullot, D. Douillet, F. Aug, O. Albert, V. Ramanathan, J. P. Chambaret, D. Hulin, and P. Balcou, “Enhancement of high-order harmonic generation at tuned wavelengths through adaptive control,” Opt. Lett. 29(1), 86–88 (2004).
[CrossRef] [PubMed]

2003 (2)

H. Kim, D. Lee, K.-H. Hong, J.-H. Kim, I. Choi, and C. Nam, “Continuously tunable high-order harmonics from atoms in an intense femtosecond laser field,” Phys. Rev. A 67(5), 051801 (2003).
[CrossRef]

R. Taïeb, V. Veniard, J. Wassaf, and A. Maquet, “Roles of resonances and recollisions in strong-field atomic phenomena. II. High-order harmonic generation,” Phys. Rev. A 68(3), 033403 (2003).
[CrossRef]

2002 (2)

B. Shan, A. Cavalieri, and Z. Chang, “Tunable high harmonic generation with an optical parametric amplifier,” Appl. Phys. B 74(9), s23–s26 (2002).
[CrossRef]

Z. Zeng, R. Li, Y. Cheng, W. Yu, and Z. Xu, “Resonance-enhanced high-order harmonic generation and frequency mixing in two-color laser field,” Phys. Scr. 66(4), 321–325 (2002).
[CrossRef]

2001 (1)

M. B. Gaarde and K. J. Schafer, “Enhancement of many high-order harmonics via a single multiphoton resonance,” Phys. Rev. A 64(1), 013820 (2001).
[CrossRef]

2000 (2)

R. Bartels, S. Backus, E. Zeek, L. Misoguti, G. Vdovin, I. P. Christov, M. M. Murnane, and H. C. Kapteyn, “Shaped-pulse optimization of coherent emission of high-harmonic soft X-rays,” Nature 406(6792), 164–166 (2000).
[CrossRef] [PubMed]

E. Cormier and M. Lewenstein, “Optimizing the efficiency in high order harmonic generation optimization by two-color fields,” Eur. Phys. J. D 12(2), 227–233 (2000).
[CrossRef]

1999 (2)

C. McGuinness, M. Martins, P. Wernet, B. F. Sonntag, P. Kampen, J.-P. Mosnier, E. T. Kennedy, and J. T. Costello, “Metastable state contributions to the measured 3p photoabsorption spectrum of Cr+ ions in a laser-produced plasma,” J. Phys. B 32(20), L583–L591 (1999).
[CrossRef]

E. S. Toma, P. Antoine, A. Bohan, and H. G. Muller, “Resonance-enhanced high-harmonic generation,” J. Phys. B 32(24), 5843–5852 (1999).
[CrossRef]

1998 (2)

Z. Chang, A. Rundquist, H. Wang, I. Christov, H. C. Kapteyn, and M. M. Murnane, “Temporal phase control of soft-x-ray harmonic emission,” Phys. Rev. A 58(1), R30–R33 (1998).
[CrossRef]

C. Iaconis and I. A. Walmsley, “Spectral phase interferometry for direct electric-field reconstruction of ultrashort optical pulses,” Opt. Lett. 23(10), 792–794 (1998).
[CrossRef] [PubMed]

1993 (1)

P. B. Corkum, “Plasma perspective on strong field multiphoton ionization,” Phys. Rev. Lett. 71(13), 1994–1997 (1993).
[CrossRef] [PubMed]

1992 (1)

J. L. Krause, K. J. Schafer, and K. C. Kulander, “High-order harmonic generation from atoms and ions in the high intensity regime,” Phys. Rev. Lett. 68(24), 3535–3538 (1992).
[CrossRef] [PubMed]

Abel, M. J.

Albert, O.

Antoine, P.

E. S. Toma, P. Antoine, A. Bohan, and H. G. Muller, “Resonance-enhanced high-harmonic generation,” J. Phys. B 32(24), 5843–5852 (1999).
[CrossRef]

Arpin, P.

T. Popmintchev, M.-C. Chen, P. Arpin, M. M. Murnane, and H. C. Kapteyn, “The attosecond nonlinear optics of bright coherent X-ray generation,” Nat. Photonics 4(12), 822–832 (2010).
[CrossRef]

Aug, F.

Baba, M.

Backus, S.

R. Bartels, S. Backus, E. Zeek, L. Misoguti, G. Vdovin, I. P. Christov, M. M. Murnane, and H. C. Kapteyn, “Shaped-pulse optimization of coherent emission of high-harmonic soft X-rays,” Nature 406(6792), 164–166 (2000).
[CrossRef] [PubMed]

Balcou, P.

Bartels, R.

R. Bartels, S. Backus, E. Zeek, L. Misoguti, G. Vdovin, I. P. Christov, M. M. Murnane, and H. C. Kapteyn, “Shaped-pulse optimization of coherent emission of high-harmonic soft X-rays,” Nature 406(6792), 164–166 (2000).
[CrossRef] [PubMed]

Baumberg, J. J.

Benis, E. P.

D. Charalambidis, P. Tzallas, E. P. Benis, E. Skantzakis, G. Maravelias, L A A. Nikolopoulos, A. Peralta Conde, and G. D. Tsakiris, “Exploring intense attosecond pulses,” New J. Phys. 10(2), 025018 (2008).
[CrossRef]

Bohan, A.

E. S. Toma, P. Antoine, A. Bohan, and H. G. Muller, “Resonance-enhanced high-harmonic generation,” J. Phys. B 32(24), 5843–5852 (1999).
[CrossRef]

Bom, L.

R. A. Ganeev, L. Bom, J.-C. Kieffer, and T. Ozaki, “Systematic investigation of resonance-induced single-harmonic enhancement in the extreme-ultraviolet range,” Phys. Rev. A 75(6), 063806 (2007).
[CrossRef]

Brocklesby, W. S.

Carré, B.

Cavalieri, A.

B. Shan, A. Cavalieri, and Z. Chang, “Tunable high harmonic generation with an optical parametric amplifier,” Appl. Phys. B 74(9), s23–s26 (2002).
[CrossRef]

Chakera, J. A.

R. A. Ganeev, H. Singhal, P. A. Naik, J. A. Chakera, H. S. Vora, R. A. Khan, and P. D. Gupta, “Systematic studies of two-color pump-induced high-order harmonic generation in plasma plumes,” Phys. Rev. A 82(5), 053831 (2010).
[CrossRef]

R. A. Ganeev, H. Singhal, P. A. Naik, I. A. Kulagin, P. V. Redkin, J. A. Chakera, M. Tayyab, R. A. Khan, and P. D. Gupta, “Enhancement of high-order harmonic generation using a two-color pump in plasma plumes,” Phys. Rev. A 80(3), 033845 (2009).
[CrossRef]

R. A. Ganeev, P. A. Naik, H. Singhal, J. A. Chakera, and P. D. Gupta, “Strong enhancement and extinction of single harmonic intensity in the mid- and end-plateau regions of the high harmonics generated in weakly excited laser plasmas,” Opt. Lett. 32(1), 65–67 (2007).
[CrossRef] [PubMed]

Chambaret, J. P.

Chang, Z.

B. Shan, A. Cavalieri, and Z. Chang, “Tunable high harmonic generation with an optical parametric amplifier,” Appl. Phys. B 74(9), s23–s26 (2002).
[CrossRef]

Z. Chang, A. Rundquist, H. Wang, I. Christov, H. C. Kapteyn, and M. M. Murnane, “Temporal phase control of soft-x-ray harmonic emission,” Phys. Rev. A 58(1), R30–R33 (1998).
[CrossRef]

Charalambidis, D.

D. Charalambidis, P. Tzallas, E. P. Benis, E. Skantzakis, G. Maravelias, L A A. Nikolopoulos, A. Peralta Conde, and G. D. Tsakiris, “Exploring intense attosecond pulses,” New J. Phys. 10(2), 025018 (2008).
[CrossRef]

Chen, M.-C.

T. Popmintchev, M.-C. Chen, P. Arpin, M. M. Murnane, and H. C. Kapteyn, “The attosecond nonlinear optics of bright coherent X-ray generation,” Nat. Photonics 4(12), 822–832 (2010).
[CrossRef]

Cheng, Y.

Z. Zeng, R. Li, Y. Cheng, W. Yu, and Z. Xu, “Resonance-enhanced high-order harmonic generation and frequency mixing in two-color laser field,” Phys. Scr. 66(4), 321–325 (2002).
[CrossRef]

Cho, D. J.

I. J. Kim, C. M. Kim, H. T. Kim, G. H. Lee, Y. S. Lee, J. Y. Park, D. J. Cho, and C. H. Nam, “Highly efficient high-harmonic generation in an orthogonally polarized two-color laser field,” Phys. Rev. Lett. 94(24), 243901 (2005).
[CrossRef]

Choi, I.

H. Kim, D. Lee, K.-H. Hong, J.-H. Kim, I. Choi, and C. Nam, “Continuously tunable high-order harmonics from atoms in an intense femtosecond laser field,” Phys. Rev. A 67(5), 051801 (2003).
[CrossRef]

Christov, I.

Z. Chang, A. Rundquist, H. Wang, I. Christov, H. C. Kapteyn, and M. M. Murnane, “Temporal phase control of soft-x-ray harmonic emission,” Phys. Rev. A 58(1), R30–R33 (1998).
[CrossRef]

Christov, I. P.

R. Bartels, S. Backus, E. Zeek, L. Misoguti, G. Vdovin, I. P. Christov, M. M. Murnane, and H. C. Kapteyn, “Shaped-pulse optimization of coherent emission of high-harmonic soft X-rays,” Nature 406(6792), 164–166 (2000).
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C. McGuinness, M. Martins, P. Wernet, B. F. Sonntag, P. Kampen, J.-P. Mosnier, E. T. Kennedy, and J. T. Costello, “Metastable state contributions to the measured 3p photoabsorption spectrum of Cr+ ions in a laser-produced plasma,” J. Phys. B 32(20), L583–L591 (1999).
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R. A. Ganeev, H. Singhal, P. A. Naik, J. A. Chakera, H. S. Vora, R. A. Khan, and P. D. Gupta, “Systematic studies of two-color pump-induced high-order harmonic generation in plasma plumes,” Phys. Rev. A 82(5), 053831 (2010).
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R. A. Ganeev, H. Singhal, P. A. Naik, I. A. Kulagin, P. V. Redkin, J. A. Chakera, M. Tayyab, R. A. Khan, and P. D. Gupta, “Enhancement of high-order harmonic generation using a two-color pump in plasma plumes,” Phys. Rev. A 80(3), 033845 (2009).
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M. Suzuki, M. Baba, H. Kuroda, R. A. Ganeev, and T. Ozaki, “Intense exact resonance enhancement of single-high-harmonic from an antimony ion by using Ti:Sapphire laser at 37 nm,” Opt. Express 15(3), 1161–1166 (2007).
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R. A. Ganeev, M. Suzuki, M. Baba, H. Kuroda, and T. Ozaki, “Strong resonance enhancement of a single harmonic generated in the extreme ultraviolet range,” Opt. Lett. 31(11), 1699–1701 (2006).
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Gupta, P. D.

R. A. Ganeev, H. Singhal, P. A. Naik, J. A. Chakera, H. S. Vora, R. A. Khan, and P. D. Gupta, “Systematic studies of two-color pump-induced high-order harmonic generation in plasma plumes,” Phys. Rev. A 82(5), 053831 (2010).
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R. A. Ganeev, H. Singhal, P. A. Naik, I. A. Kulagin, P. V. Redkin, J. A. Chakera, M. Tayyab, R. A. Khan, and P. D. Gupta, “Enhancement of high-order harmonic generation using a two-color pump in plasma plumes,” Phys. Rev. A 80(3), 033845 (2009).
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R. A. Ganeev, P. A. Naik, H. Singhal, J. A. Chakera, and P. D. Gupta, “Strong enhancement and extinction of single harmonic intensity in the mid- and end-plateau regions of the high harmonics generated in weakly excited laser plasmas,” Opt. Lett. 32(1), 65–67 (2007).
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J. Mauritsson, P. Johnsson, E. Gustafsson, A. L’Huillier, K. J. Schafer, and M. B. Gaarde, “Attosecond pulse trains generated using two color laser fields,” Phys. Rev. Lett. 97(1), 013001 (2006).
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Hanna, D. C.

Hergott, J. F.

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H. T. Kim, J. H. Kim, D. G. Lee, K. H. Hong, Y. S. Lee, V. Tosa, and C. H. Nam, “Optimization of high-order harmonic brightness in the space and time domains,” Phys. Rev. A 69(3), 031805 (2004).
[CrossRef]

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H. Kim, D. Lee, K.-H. Hong, J.-H. Kim, I. Choi, and C. Nam, “Continuously tunable high-order harmonics from atoms in an intense femtosecond laser field,” Phys. Rev. A 67(5), 051801 (2003).
[CrossRef]

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Hutchison, C.

R. A. Ganeev, C. Hutchison, T. Siegel, M. E. López-Arias, A. Zaïr, and J. P. Marangos, “High-order harmonic generation from metal plasmas using 1 kHz laser pulses,” J. Mod. Opt. 58(10), 819–824 (2011).
[CrossRef]

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Jakubczak, K.

I. J. Kim, G. H. Lee, S. B. Park, Y. S. Lee, T. K. Kim, C. H. Nam, T. Mocek, and K. Jakubczak, “Generation of submicrojoule high harmonics using a long gas jet in a two-color laser field,” Appl. Phys. Lett. 92(2), 021125 (2008).
[CrossRef]

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J. Mauritsson, P. Johnsson, E. Gustafsson, A. L’Huillier, K. J. Schafer, and M. B. Gaarde, “Attosecond pulse trains generated using two color laser fields,” Phys. Rev. Lett. 97(1), 013001 (2006).
[CrossRef] [PubMed]

Kampen, P.

C. McGuinness, M. Martins, P. Wernet, B. F. Sonntag, P. Kampen, J.-P. Mosnier, E. T. Kennedy, and J. T. Costello, “Metastable state contributions to the measured 3p photoabsorption spectrum of Cr+ ions in a laser-produced plasma,” J. Phys. B 32(20), L583–L591 (1999).
[CrossRef]

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T. Popmintchev, M.-C. Chen, P. Arpin, M. M. Murnane, and H. C. Kapteyn, “The attosecond nonlinear optics of bright coherent X-ray generation,” Nat. Photonics 4(12), 822–832 (2010).
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R. Bartels, S. Backus, E. Zeek, L. Misoguti, G. Vdovin, I. P. Christov, M. M. Murnane, and H. C. Kapteyn, “Shaped-pulse optimization of coherent emission of high-harmonic soft X-rays,” Nature 406(6792), 164–166 (2000).
[CrossRef] [PubMed]

Z. Chang, A. Rundquist, H. Wang, I. Christov, H. C. Kapteyn, and M. M. Murnane, “Temporal phase control of soft-x-ray harmonic emission,” Phys. Rev. A 58(1), R30–R33 (1998).
[CrossRef]

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Kennedy, E. T.

C. McGuinness, M. Martins, P. Wernet, B. F. Sonntag, P. Kampen, J.-P. Mosnier, E. T. Kennedy, and J. T. Costello, “Metastable state contributions to the measured 3p photoabsorption spectrum of Cr+ ions in a laser-produced plasma,” J. Phys. B 32(20), L583–L591 (1999).
[CrossRef]

Khan, R. A.

R. A. Ganeev, H. Singhal, P. A. Naik, J. A. Chakera, H. S. Vora, R. A. Khan, and P. D. Gupta, “Systematic studies of two-color pump-induced high-order harmonic generation in plasma plumes,” Phys. Rev. A 82(5), 053831 (2010).
[CrossRef]

R. A. Ganeev, H. Singhal, P. A. Naik, I. A. Kulagin, P. V. Redkin, J. A. Chakera, M. Tayyab, R. A. Khan, and P. D. Gupta, “Enhancement of high-order harmonic generation using a two-color pump in plasma plumes,” Phys. Rev. A 80(3), 033845 (2009).
[CrossRef]

Kieffer, J.-C.

R. A. Ganeev, L. Bom, J.-C. Kieffer, and T. Ozaki, “Systematic investigation of resonance-induced single-harmonic enhancement in the extreme-ultraviolet range,” Phys. Rev. A 75(6), 063806 (2007).
[CrossRef]

Kim, C. M.

I. J. Kim, C. M. Kim, H. T. Kim, G. H. Lee, Y. S. Lee, J. Y. Park, D. J. Cho, and C. H. Nam, “Highly efficient high-harmonic generation in an orthogonally polarized two-color laser field,” Phys. Rev. Lett. 94(24), 243901 (2005).
[CrossRef]

Kim, H.

H. Kim, D. Lee, K.-H. Hong, J.-H. Kim, I. Choi, and C. Nam, “Continuously tunable high-order harmonics from atoms in an intense femtosecond laser field,” Phys. Rev. A 67(5), 051801 (2003).
[CrossRef]

Kim, H. T.

I. J. Kim, C. M. Kim, H. T. Kim, G. H. Lee, Y. S. Lee, J. Y. Park, D. J. Cho, and C. H. Nam, “Highly efficient high-harmonic generation in an orthogonally polarized two-color laser field,” Phys. Rev. Lett. 94(24), 243901 (2005).
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V. Tosa, H. T. Kim, I. J. Kim, and C. H. Nam, “High-order harmonic generation by chirped and self-guided femtosecond laser pulses. II. Time-frequency analysis,” Phys. Rev. A 71(6), 063808 (2005).
[CrossRef]

H. T. Kim, J. H. Kim, D. G. Lee, K. H. Hong, Y. S. Lee, V. Tosa, and C. H. Nam, “Optimization of high-order harmonic brightness in the space and time domains,” Phys. Rev. A 69(3), 031805 (2004).
[CrossRef]

Kim, I. J.

I. J. Kim, G. H. Lee, S. B. Park, Y. S. Lee, T. K. Kim, C. H. Nam, T. Mocek, and K. Jakubczak, “Generation of submicrojoule high harmonics using a long gas jet in a two-color laser field,” Appl. Phys. Lett. 92(2), 021125 (2008).
[CrossRef]

I. J. Kim, C. M. Kim, H. T. Kim, G. H. Lee, Y. S. Lee, J. Y. Park, D. J. Cho, and C. H. Nam, “Highly efficient high-harmonic generation in an orthogonally polarized two-color laser field,” Phys. Rev. Lett. 94(24), 243901 (2005).
[CrossRef]

V. Tosa, H. T. Kim, I. J. Kim, and C. H. Nam, “High-order harmonic generation by chirped and self-guided femtosecond laser pulses. II. Time-frequency analysis,” Phys. Rev. A 71(6), 063808 (2005).
[CrossRef]

Kim, J. H.

H. T. Kim, J. H. Kim, D. G. Lee, K. H. Hong, Y. S. Lee, V. Tosa, and C. H. Nam, “Optimization of high-order harmonic brightness in the space and time domains,” Phys. Rev. A 69(3), 031805 (2004).
[CrossRef]

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H. Kim, D. Lee, K.-H. Hong, J.-H. Kim, I. Choi, and C. Nam, “Continuously tunable high-order harmonics from atoms in an intense femtosecond laser field,” Phys. Rev. A 67(5), 051801 (2003).
[CrossRef]

Kim, T. K.

I. J. Kim, G. H. Lee, S. B. Park, Y. S. Lee, T. K. Kim, C. H. Nam, T. Mocek, and K. Jakubczak, “Generation of submicrojoule high harmonics using a long gas jet in a two-color laser field,” Appl. Phys. Lett. 92(2), 021125 (2008).
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R. A. Ganeev, H. Singhal, P. A. Naik, I. A. Kulagin, P. V. Redkin, J. A. Chakera, M. Tayyab, R. A. Khan, and P. D. Gupta, “Enhancement of high-order harmonic generation using a two-color pump in plasma plumes,” Phys. Rev. A 80(3), 033845 (2009).
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J. L. Krause, K. J. Schafer, and K. C. Kulander, “High-order harmonic generation from atoms and ions in the high intensity regime,” Phys. Rev. Lett. 68(24), 3535–3538 (1992).
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L’Huillier, A.

J. Mauritsson, P. Johnsson, E. Gustafsson, A. L’Huillier, K. J. Schafer, and M. B. Gaarde, “Attosecond pulse trains generated using two color laser fields,” Phys. Rev. Lett. 97(1), 013001 (2006).
[CrossRef] [PubMed]

Lee, D.

H. Kim, D. Lee, K.-H. Hong, J.-H. Kim, I. Choi, and C. Nam, “Continuously tunable high-order harmonics from atoms in an intense femtosecond laser field,” Phys. Rev. A 67(5), 051801 (2003).
[CrossRef]

Lee, D. G.

H. T. Kim, J. H. Kim, D. G. Lee, K. H. Hong, Y. S. Lee, V. Tosa, and C. H. Nam, “Optimization of high-order harmonic brightness in the space and time domains,” Phys. Rev. A 69(3), 031805 (2004).
[CrossRef]

Lee, G. H.

I. J. Kim, G. H. Lee, S. B. Park, Y. S. Lee, T. K. Kim, C. H. Nam, T. Mocek, and K. Jakubczak, “Generation of submicrojoule high harmonics using a long gas jet in a two-color laser field,” Appl. Phys. Lett. 92(2), 021125 (2008).
[CrossRef]

I. J. Kim, C. M. Kim, H. T. Kim, G. H. Lee, Y. S. Lee, J. Y. Park, D. J. Cho, and C. H. Nam, “Highly efficient high-harmonic generation in an orthogonally polarized two-color laser field,” Phys. Rev. Lett. 94(24), 243901 (2005).
[CrossRef]

Lee, Y. S.

I. J. Kim, G. H. Lee, S. B. Park, Y. S. Lee, T. K. Kim, C. H. Nam, T. Mocek, and K. Jakubczak, “Generation of submicrojoule high harmonics using a long gas jet in a two-color laser field,” Appl. Phys. Lett. 92(2), 021125 (2008).
[CrossRef]

I. J. Kim, C. M. Kim, H. T. Kim, G. H. Lee, Y. S. Lee, J. Y. Park, D. J. Cho, and C. H. Nam, “Highly efficient high-harmonic generation in an orthogonally polarized two-color laser field,” Phys. Rev. Lett. 94(24), 243901 (2005).
[CrossRef]

H. T. Kim, J. H. Kim, D. G. Lee, K. H. Hong, Y. S. Lee, V. Tosa, and C. H. Nam, “Optimization of high-order harmonic brightness in the space and time domains,” Phys. Rev. A 69(3), 031805 (2004).
[CrossRef]

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M. Tudorovskaya and M. Lein, “High-order harmonic generation in the presence of a resonance,” Phys. Rev. A 84(1), 013430 (2011).
[CrossRef]

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Lepetit, F.

Lewenstein, M.

E. Cormier and M. Lewenstein, “Optimizing the efficiency in high order harmonic generation optimization by two-color fields,” Eur. Phys. J. D 12(2), 227–233 (2000).
[CrossRef]

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Z. Zeng, R. Li, Y. Cheng, W. Yu, and Z. Xu, “Resonance-enhanced high-order harmonic generation and frequency mixing in two-color laser field,” Phys. Scr. 66(4), 321–325 (2002).
[CrossRef]

López-Arias, M. E.

R. A. Ganeev, C. Hutchison, T. Siegel, M. E. López-Arias, A. Zaïr, and J. P. Marangos, “High-order harmonic generation from metal plasmas using 1 kHz laser pulses,” J. Mod. Opt. 58(10), 819–824 (2011).
[CrossRef]

Manakov, N. L.

M. V. Frolov, N. L. Manakov, and A. F. Starace, “Potential barrier effects in high-order harmonic generation by transition-metal ions,” Phys. Rev. A 82(2), 023424 (2010).
[CrossRef]

Maquet, A.

R. Taïeb, V. Veniard, J. Wassaf, and A. Maquet, “Roles of resonances and recollisions in strong-field atomic phenomena. II. High-order harmonic generation,” Phys. Rev. A 68(3), 033403 (2003).
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Marangos, J. P.

R. A. Ganeev, C. Hutchison, T. Siegel, M. E. López-Arias, A. Zaïr, and J. P. Marangos, “High-order harmonic generation from metal plasmas using 1 kHz laser pulses,” J. Mod. Opt. 58(10), 819–824 (2011).
[CrossRef]

Maravelias, G.

D. Charalambidis, P. Tzallas, E. P. Benis, E. Skantzakis, G. Maravelias, L A A. Nikolopoulos, A. Peralta Conde, and G. D. Tsakiris, “Exploring intense attosecond pulses,” New J. Phys. 10(2), 025018 (2008).
[CrossRef]

Martins, M.

C. McGuinness, M. Martins, P. Wernet, B. F. Sonntag, P. Kampen, J.-P. Mosnier, E. T. Kennedy, and J. T. Costello, “Metastable state contributions to the measured 3p photoabsorption spectrum of Cr+ ions in a laser-produced plasma,” J. Phys. B 32(20), L583–L591 (1999).
[CrossRef]

Mauritsson, J.

J. Mauritsson, P. Johnsson, E. Gustafsson, A. L’Huillier, K. J. Schafer, and M. B. Gaarde, “Attosecond pulse trains generated using two color laser fields,” Phys. Rev. Lett. 97(1), 013001 (2006).
[CrossRef] [PubMed]

McGuinness, C.

C. McGuinness, M. Martins, P. Wernet, B. F. Sonntag, P. Kampen, J.-P. Mosnier, E. T. Kennedy, and J. T. Costello, “Metastable state contributions to the measured 3p photoabsorption spectrum of Cr+ ions in a laser-produced plasma,” J. Phys. B 32(20), L583–L591 (1999).
[CrossRef]

Miloševic, D. B.

D. B. Milošević, “Resonant high-order harmonic generation from plasma ablation: Laser intensity dependence of the harmonic intensity and phase,” Phys. Rev. A 81(2), 023802 (2010).
[CrossRef]

Misoguti, L.

R. Bartels, S. Backus, E. Zeek, L. Misoguti, G. Vdovin, I. P. Christov, M. M. Murnane, and H. C. Kapteyn, “Shaped-pulse optimization of coherent emission of high-harmonic soft X-rays,” Nature 406(6792), 164–166 (2000).
[CrossRef] [PubMed]

Mocek, T.

I. J. Kim, G. H. Lee, S. B. Park, Y. S. Lee, T. K. Kim, C. H. Nam, T. Mocek, and K. Jakubczak, “Generation of submicrojoule high harmonics using a long gas jet in a two-color laser field,” Appl. Phys. Lett. 92(2), 021125 (2008).
[CrossRef]

Mosnier, J.-P.

C. McGuinness, M. Martins, P. Wernet, B. F. Sonntag, P. Kampen, J.-P. Mosnier, E. T. Kennedy, and J. T. Costello, “Metastable state contributions to the measured 3p photoabsorption spectrum of Cr+ ions in a laser-produced plasma,” J. Phys. B 32(20), L583–L591 (1999).
[CrossRef]

Muller, H. G.

E. S. Toma, P. Antoine, A. Bohan, and H. G. Muller, “Resonance-enhanced high-harmonic generation,” J. Phys. B 32(24), 5843–5852 (1999).
[CrossRef]

Mullot, G.

Murnane, M. M.

T. Popmintchev, M.-C. Chen, P. Arpin, M. M. Murnane, and H. C. Kapteyn, “The attosecond nonlinear optics of bright coherent X-ray generation,” Nat. Photonics 4(12), 822–832 (2010).
[CrossRef]

R. Bartels, S. Backus, E. Zeek, L. Misoguti, G. Vdovin, I. P. Christov, M. M. Murnane, and H. C. Kapteyn, “Shaped-pulse optimization of coherent emission of high-harmonic soft X-rays,” Nature 406(6792), 164–166 (2000).
[CrossRef] [PubMed]

Z. Chang, A. Rundquist, H. Wang, I. Christov, H. C. Kapteyn, and M. M. Murnane, “Temporal phase control of soft-x-ray harmonic emission,” Phys. Rev. A 58(1), R30–R33 (1998).
[CrossRef]

Naik, P. A.

R. A. Ganeev, H. Singhal, P. A. Naik, J. A. Chakera, H. S. Vora, R. A. Khan, and P. D. Gupta, “Systematic studies of two-color pump-induced high-order harmonic generation in plasma plumes,” Phys. Rev. A 82(5), 053831 (2010).
[CrossRef]

R. A. Ganeev, H. Singhal, P. A. Naik, I. A. Kulagin, P. V. Redkin, J. A. Chakera, M. Tayyab, R. A. Khan, and P. D. Gupta, “Enhancement of high-order harmonic generation using a two-color pump in plasma plumes,” Phys. Rev. A 80(3), 033845 (2009).
[CrossRef]

R. A. Ganeev, P. A. Naik, H. Singhal, J. A. Chakera, and P. D. Gupta, “Strong enhancement and extinction of single harmonic intensity in the mid- and end-plateau regions of the high harmonics generated in weakly excited laser plasmas,” Opt. Lett. 32(1), 65–67 (2007).
[CrossRef] [PubMed]

Nam, C.

H. Kim, D. Lee, K.-H. Hong, J.-H. Kim, I. Choi, and C. Nam, “Continuously tunable high-order harmonics from atoms in an intense femtosecond laser field,” Phys. Rev. A 67(5), 051801 (2003).
[CrossRef]

Nam, C. H.

I. J. Kim, G. H. Lee, S. B. Park, Y. S. Lee, T. K. Kim, C. H. Nam, T. Mocek, and K. Jakubczak, “Generation of submicrojoule high harmonics using a long gas jet in a two-color laser field,” Appl. Phys. Lett. 92(2), 021125 (2008).
[CrossRef]

I. J. Kim, C. M. Kim, H. T. Kim, G. H. Lee, Y. S. Lee, J. Y. Park, D. J. Cho, and C. H. Nam, “Highly efficient high-harmonic generation in an orthogonally polarized two-color laser field,” Phys. Rev. Lett. 94(24), 243901 (2005).
[CrossRef]

V. Tosa, H. T. Kim, I. J. Kim, and C. H. Nam, “High-order harmonic generation by chirped and self-guided femtosecond laser pulses. II. Time-frequency analysis,” Phys. Rev. A 71(6), 063808 (2005).
[CrossRef]

H. T. Kim, J. H. Kim, D. G. Lee, K. H. Hong, Y. S. Lee, V. Tosa, and C. H. Nam, “Optimization of high-order harmonic brightness in the space and time domains,” Phys. Rev. A 69(3), 031805 (2004).
[CrossRef]

Neumark, D. M.

Nikolopoulos, L A A.

D. Charalambidis, P. Tzallas, E. P. Benis, E. Skantzakis, G. Maravelias, L A A. Nikolopoulos, A. Peralta Conde, and G. D. Tsakiris, “Exploring intense attosecond pulses,” New J. Phys. 10(2), 025018 (2008).
[CrossRef]

Ozaki, T.

Park, J. Y.

I. J. Kim, C. M. Kim, H. T. Kim, G. H. Lee, Y. S. Lee, J. Y. Park, D. J. Cho, and C. H. Nam, “Highly efficient high-harmonic generation in an orthogonally polarized two-color laser field,” Phys. Rev. Lett. 94(24), 243901 (2005).
[CrossRef]

Park, S. B.

I. J. Kim, G. H. Lee, S. B. Park, Y. S. Lee, T. K. Kim, C. H. Nam, T. Mocek, and K. Jakubczak, “Generation of submicrojoule high harmonics using a long gas jet in a two-color laser field,” Appl. Phys. Lett. 92(2), 021125 (2008).
[CrossRef]

Peralta Conde, A.

D. Charalambidis, P. Tzallas, E. P. Benis, E. Skantzakis, G. Maravelias, L A A. Nikolopoulos, A. Peralta Conde, and G. D. Tsakiris, “Exploring intense attosecond pulses,” New J. Phys. 10(2), 025018 (2008).
[CrossRef]

Perdrix, M.

Pfeifer, T.

Popmintchev, T.

T. Popmintchev, M.-C. Chen, P. Arpin, M. M. Murnane, and H. C. Kapteyn, “The attosecond nonlinear optics of bright coherent X-ray generation,” Nat. Photonics 4(12), 822–832 (2010).
[CrossRef]

Praeger, M.

Ramanathan, V.

Redkin, P. V.

R. A. Ganeev, H. Singhal, P. A. Naik, I. A. Kulagin, P. V. Redkin, J. A. Chakera, M. Tayyab, R. A. Khan, and P. D. Gupta, “Enhancement of high-order harmonic generation using a two-color pump in plasma plumes,” Phys. Rev. A 80(3), 033845 (2009).
[CrossRef]

R. A. Ganeev, M. Suzuki, P. V. Redkin, M. Baba, and H. Kuroda, “Variable pattern of high-order harmonic spectra from a laser-produced plasma by using the chirped pulses of narrow-bandwidth radiation,” Phys. Rev. A 76(2), 023832 (2007).
[CrossRef]

Reitze, D. H.

Rogers, E. T. F.

Rundquist, A.

Z. Chang, A. Rundquist, H. Wang, I. Christov, H. C. Kapteyn, and M. M. Murnane, “Temporal phase control of soft-x-ray harmonic emission,” Phys. Rev. A 58(1), R30–R33 (1998).
[CrossRef]

Salières, P.

Schafer, K. J.

J. Mauritsson, P. Johnsson, E. Gustafsson, A. L’Huillier, K. J. Schafer, and M. B. Gaarde, “Attosecond pulse trains generated using two color laser fields,” Phys. Rev. Lett. 97(1), 013001 (2006).
[CrossRef] [PubMed]

M. B. Gaarde and K. J. Schafer, “Enhancement of many high-order harmonics via a single multiphoton resonance,” Phys. Rev. A 64(1), 013820 (2001).
[CrossRef]

J. L. Krause, K. J. Schafer, and K. C. Kulander, “High-order harmonic generation from atoms and ions in the high intensity regime,” Phys. Rev. Lett. 68(24), 3535–3538 (1992).
[CrossRef] [PubMed]

Shan, B.

B. Shan, A. Cavalieri, and Z. Chang, “Tunable high harmonic generation with an optical parametric amplifier,” Appl. Phys. B 74(9), s23–s26 (2002).
[CrossRef]

Siegel, T.

R. A. Ganeev, C. Hutchison, T. Siegel, M. E. López-Arias, A. Zaïr, and J. P. Marangos, “High-order harmonic generation from metal plasmas using 1 kHz laser pulses,” J. Mod. Opt. 58(10), 819–824 (2011).
[CrossRef]

Singhal, H.

R. A. Ganeev, H. Singhal, P. A. Naik, J. A. Chakera, H. S. Vora, R. A. Khan, and P. D. Gupta, “Systematic studies of two-color pump-induced high-order harmonic generation in plasma plumes,” Phys. Rev. A 82(5), 053831 (2010).
[CrossRef]

R. A. Ganeev, H. Singhal, P. A. Naik, I. A. Kulagin, P. V. Redkin, J. A. Chakera, M. Tayyab, R. A. Khan, and P. D. Gupta, “Enhancement of high-order harmonic generation using a two-color pump in plasma plumes,” Phys. Rev. A 80(3), 033845 (2009).
[CrossRef]

R. A. Ganeev, P. A. Naik, H. Singhal, J. A. Chakera, and P. D. Gupta, “Strong enhancement and extinction of single harmonic intensity in the mid- and end-plateau regions of the high harmonics generated in weakly excited laser plasmas,” Opt. Lett. 32(1), 65–67 (2007).
[CrossRef] [PubMed]

Skantzakis, E.

D. Charalambidis, P. Tzallas, E. P. Benis, E. Skantzakis, G. Maravelias, L A A. Nikolopoulos, A. Peralta Conde, and G. D. Tsakiris, “Exploring intense attosecond pulses,” New J. Phys. 10(2), 025018 (2008).
[CrossRef]

Sonntag, B. F.

C. McGuinness, M. Martins, P. Wernet, B. F. Sonntag, P. Kampen, J.-P. Mosnier, E. T. Kennedy, and J. T. Costello, “Metastable state contributions to the measured 3p photoabsorption spectrum of Cr+ ions in a laser-produced plasma,” J. Phys. B 32(20), L583–L591 (1999).
[CrossRef]

Starace, A. F.

M. V. Frolov, N. L. Manakov, and A. F. Starace, “Potential barrier effects in high-order harmonic generation by transition-metal ions,” Phys. Rev. A 82(2), 023424 (2010).
[CrossRef]

Strelkov, V.

V. Strelkov, “Role of autoionizing state in resonant high-order harmonic generation and attosecond pulse production,” Phys. Rev. Lett. 104(12), 123901 (2010).
[CrossRef] [PubMed]

Suzuki, M.

Taïeb, R.

R. Taïeb, V. Veniard, J. Wassaf, and A. Maquet, “Roles of resonances and recollisions in strong-field atomic phenomena. II. High-order harmonic generation,” Phys. Rev. A 68(3), 033403 (2003).
[CrossRef]

Tayyab, M.

R. A. Ganeev, H. Singhal, P. A. Naik, I. A. Kulagin, P. V. Redkin, J. A. Chakera, M. Tayyab, R. A. Khan, and P. D. Gupta, “Enhancement of high-order harmonic generation using a two-color pump in plasma plumes,” Phys. Rev. A 80(3), 033845 (2009).
[CrossRef]

Toma, E. S.

E. S. Toma, P. Antoine, A. Bohan, and H. G. Muller, “Resonance-enhanced high-harmonic generation,” J. Phys. B 32(24), 5843–5852 (1999).
[CrossRef]

Tosa, V.

V. Tosa, H. T. Kim, I. J. Kim, and C. H. Nam, “High-order harmonic generation by chirped and self-guided femtosecond laser pulses. II. Time-frequency analysis,” Phys. Rev. A 71(6), 063808 (2005).
[CrossRef]

H. T. Kim, J. H. Kim, D. G. Lee, K. H. Hong, Y. S. Lee, V. Tosa, and C. H. Nam, “Optimization of high-order harmonic brightness in the space and time domains,” Phys. Rev. A 69(3), 031805 (2004).
[CrossRef]

Tsakiris, G. D.

D. Charalambidis, P. Tzallas, E. P. Benis, E. Skantzakis, G. Maravelias, L A A. Nikolopoulos, A. Peralta Conde, and G. D. Tsakiris, “Exploring intense attosecond pulses,” New J. Phys. 10(2), 025018 (2008).
[CrossRef]

Tudorovskaya, M.

M. Tudorovskaya and M. Lein, “High-order harmonic generation in the presence of a resonance,” Phys. Rev. A 84(1), 013430 (2011).
[CrossRef]

Tzallas, P.

D. Charalambidis, P. Tzallas, E. P. Benis, E. Skantzakis, G. Maravelias, L A A. Nikolopoulos, A. Peralta Conde, and G. D. Tsakiris, “Exploring intense attosecond pulses,” New J. Phys. 10(2), 025018 (2008).
[CrossRef]

Usmanov, T.

Vdovin, G.

R. Bartels, S. Backus, E. Zeek, L. Misoguti, G. Vdovin, I. P. Christov, M. M. Murnane, and H. C. Kapteyn, “Shaped-pulse optimization of coherent emission of high-harmonic soft X-rays,” Nature 406(6792), 164–166 (2000).
[CrossRef] [PubMed]

Veniard, V.

R. Taïeb, V. Veniard, J. Wassaf, and A. Maquet, “Roles of resonances and recollisions in strong-field atomic phenomena. II. High-order harmonic generation,” Phys. Rev. A 68(3), 033403 (2003).
[CrossRef]

Vora, H. S.

R. A. Ganeev, H. Singhal, P. A. Naik, J. A. Chakera, H. S. Vora, R. A. Khan, and P. D. Gupta, “Systematic studies of two-color pump-induced high-order harmonic generation in plasma plumes,” Phys. Rev. A 82(5), 053831 (2010).
[CrossRef]

Walmsley, I. A.

Wang, H.

Z. Chang, A. Rundquist, H. Wang, I. Christov, H. C. Kapteyn, and M. M. Murnane, “Temporal phase control of soft-x-ray harmonic emission,” Phys. Rev. A 58(1), R30–R33 (1998).
[CrossRef]

Wassaf, J.

R. Taïeb, V. Veniard, J. Wassaf, and A. Maquet, “Roles of resonances and recollisions in strong-field atomic phenomena. II. High-order harmonic generation,” Phys. Rev. A 68(3), 033403 (2003).
[CrossRef]

Weihe, F.

Wernet, P.

C. McGuinness, M. Martins, P. Wernet, B. F. Sonntag, P. Kampen, J.-P. Mosnier, E. T. Kennedy, and J. T. Costello, “Metastable state contributions to the measured 3p photoabsorption spectrum of Cr+ ions in a laser-produced plasma,” J. Phys. B 32(20), L583–L591 (1999).
[CrossRef]

Xu, Z.

Z. Zeng, R. Li, Y. Cheng, W. Yu, and Z. Xu, “Resonance-enhanced high-order harmonic generation and frequency mixing in two-color laser field,” Phys. Scr. 66(4), 321–325 (2002).
[CrossRef]

Yu, W.

Z. Zeng, R. Li, Y. Cheng, W. Yu, and Z. Xu, “Resonance-enhanced high-order harmonic generation and frequency mixing in two-color laser field,” Phys. Scr. 66(4), 321–325 (2002).
[CrossRef]

Zaïr, A.

R. A. Ganeev, C. Hutchison, T. Siegel, M. E. López-Arias, A. Zaïr, and J. P. Marangos, “High-order harmonic generation from metal plasmas using 1 kHz laser pulses,” J. Mod. Opt. 58(10), 819–824 (2011).
[CrossRef]

Zeek, E.

R. Bartels, S. Backus, E. Zeek, L. Misoguti, G. Vdovin, I. P. Christov, M. M. Murnane, and H. C. Kapteyn, “Shaped-pulse optimization of coherent emission of high-harmonic soft X-rays,” Nature 406(6792), 164–166 (2000).
[CrossRef] [PubMed]

Zeng, Z.

Z. Zeng, R. Li, Y. Cheng, W. Yu, and Z. Xu, “Resonance-enhanced high-order harmonic generation and frequency mixing in two-color laser field,” Phys. Scr. 66(4), 321–325 (2002).
[CrossRef]

Appl. Phys. B (1)

B. Shan, A. Cavalieri, and Z. Chang, “Tunable high harmonic generation with an optical parametric amplifier,” Appl. Phys. B 74(9), s23–s26 (2002).
[CrossRef]

Appl. Phys. Lett. (2)

I. J. Kim, G. H. Lee, S. B. Park, Y. S. Lee, T. K. Kim, C. H. Nam, T. Mocek, and K. Jakubczak, “Generation of submicrojoule high harmonics using a long gas jet in a two-color laser field,” Appl. Phys. Lett. 92(2), 021125 (2008).
[CrossRef]

R. A. Ganeev, M. Suzuki, M. Baba, and H. Kuroda, “Harmonic generation from chromium plasma,” Appl. Phys. Lett. 86(13), 131116 (2005).
[CrossRef]

Eur. Phys. J. D (1)

E. Cormier and M. Lewenstein, “Optimizing the efficiency in high order harmonic generation optimization by two-color fields,” Eur. Phys. J. D 12(2), 227–233 (2000).
[CrossRef]

J. Mod. Opt. (1)

R. A. Ganeev, C. Hutchison, T. Siegel, M. E. López-Arias, A. Zaïr, and J. P. Marangos, “High-order harmonic generation from metal plasmas using 1 kHz laser pulses,” J. Mod. Opt. 58(10), 819–824 (2011).
[CrossRef]

J. Phys. B (3)

R. A. Ganeev, “High-order harmonic generation in a laser plasma: a review of recent achievements,” J. Phys. B 40(22), R213–R253 (2007).
[CrossRef]

E. S. Toma, P. Antoine, A. Bohan, and H. G. Muller, “Resonance-enhanced high-harmonic generation,” J. Phys. B 32(24), 5843–5852 (1999).
[CrossRef]

C. McGuinness, M. Martins, P. Wernet, B. F. Sonntag, P. Kampen, J.-P. Mosnier, E. T. Kennedy, and J. T. Costello, “Metastable state contributions to the measured 3p photoabsorption spectrum of Cr+ ions in a laser-produced plasma,” J. Phys. B 32(20), L583–L591 (1999).
[CrossRef]

Nat. Photonics (1)

T. Popmintchev, M.-C. Chen, P. Arpin, M. M. Murnane, and H. C. Kapteyn, “The attosecond nonlinear optics of bright coherent X-ray generation,” Nat. Photonics 4(12), 822–832 (2010).
[CrossRef]

Nature (1)

R. Bartels, S. Backus, E. Zeek, L. Misoguti, G. Vdovin, I. P. Christov, M. M. Murnane, and H. C. Kapteyn, “Shaped-pulse optimization of coherent emission of high-harmonic soft X-rays,” Nature 406(6792), 164–166 (2000).
[CrossRef] [PubMed]

New J. Phys. (1)

D. Charalambidis, P. Tzallas, E. P. Benis, E. Skantzakis, G. Maravelias, L A A. Nikolopoulos, A. Peralta Conde, and G. D. Tsakiris, “Exploring intense attosecond pulses,” New J. Phys. 10(2), 025018 (2008).
[CrossRef]

Opt. Express (3)

Opt. Lett. (8)

I. A. Kulagin and T. Usmanov, “Efficient selection of single high-order harmonic caused by atomic autoionizing state influence,” Opt. Lett. 34(17), 2616–2618 (2009).
[CrossRef] [PubMed]

M. Suzuki, M. Baba, R. Ganeev, H. Kuroda, and T. Ozaki, “Anomalous enhancement of a single high-order harmonic by using a laser-ablation tin plume at 47 nm,” Opt. Lett. 31(22), 3306–3308 (2006).
[CrossRef] [PubMed]

R. A. Ganeev, M. Suzuki, M. Baba, H. Kuroda, and T. Ozaki, “Strong resonance enhancement of a single harmonic generated in the extreme ultraviolet range,” Opt. Lett. 31(11), 1699–1701 (2006).
[CrossRef] [PubMed]

D. H. Reitze, S. Kazamias, F. Weihe, G. Mullot, D. Douillet, F. Aug, O. Albert, V. Ramanathan, J. P. Chambaret, D. Hulin, and P. Balcou, “Enhancement of high-order harmonic generation at tuned wavelengths through adaptive control,” Opt. Lett. 29(1), 86–88 (2004).
[CrossRef] [PubMed]

C. A. Froud, E. T. F. Rogers, D. C. Hanna, W. S. Brocklesby, M. Praeger, A. M. de Paula, J. J. Baumberg, and J. G. Frey, “Soft-x-ray wavelength shift induced by ionization effects in a capillary,” Opt. Lett. 31(3), 374–376 (2006).
[CrossRef] [PubMed]

R. A. Ganeev, P. A. Naik, H. Singhal, J. A. Chakera, and P. D. Gupta, “Strong enhancement and extinction of single harmonic intensity in the mid- and end-plateau regions of the high harmonics generated in weakly excited laser plasmas,” Opt. Lett. 32(1), 65–67 (2007).
[CrossRef] [PubMed]

T. Pfeifer, L. Gallmann, M. J. Abel, D. M. Neumark, and S. R. Leone, “Single attosecond pulse generation in the multicycle-driver regime by adding a weak second-harmonic field,” Opt. Lett. 31(7), 975–977 (2006).
[CrossRef] [PubMed]

C. Iaconis and I. A. Walmsley, “Spectral phase interferometry for direct electric-field reconstruction of ultrashort optical pulses,” Opt. Lett. 23(10), 792–794 (1998).
[CrossRef] [PubMed]

Phys. Rev. A (13)

R. A. Ganeev, H. Singhal, P. A. Naik, J. A. Chakera, H. S. Vora, R. A. Khan, and P. D. Gupta, “Systematic studies of two-color pump-induced high-order harmonic generation in plasma plumes,” Phys. Rev. A 82(5), 053831 (2010).
[CrossRef]

H. Kim, D. Lee, K.-H. Hong, J.-H. Kim, I. Choi, and C. Nam, “Continuously tunable high-order harmonics from atoms in an intense femtosecond laser field,” Phys. Rev. A 67(5), 051801 (2003).
[CrossRef]

V. Tosa, H. T. Kim, I. J. Kim, and C. H. Nam, “High-order harmonic generation by chirped and self-guided femtosecond laser pulses. II. Time-frequency analysis,” Phys. Rev. A 71(6), 063808 (2005).
[CrossRef]

R. A. Ganeev, M. Suzuki, P. V. Redkin, M. Baba, and H. Kuroda, “Variable pattern of high-order harmonic spectra from a laser-produced plasma by using the chirped pulses of narrow-bandwidth radiation,” Phys. Rev. A 76(2), 023832 (2007).
[CrossRef]

R. Taïeb, V. Veniard, J. Wassaf, and A. Maquet, “Roles of resonances and recollisions in strong-field atomic phenomena. II. High-order harmonic generation,” Phys. Rev. A 68(3), 033403 (2003).
[CrossRef]

M. B. Gaarde and K. J. Schafer, “Enhancement of many high-order harmonics via a single multiphoton resonance,” Phys. Rev. A 64(1), 013820 (2001).
[CrossRef]

Z. Chang, A. Rundquist, H. Wang, I. Christov, H. C. Kapteyn, and M. M. Murnane, “Temporal phase control of soft-x-ray harmonic emission,” Phys. Rev. A 58(1), R30–R33 (1998).
[CrossRef]

H. T. Kim, J. H. Kim, D. G. Lee, K. H. Hong, Y. S. Lee, V. Tosa, and C. H. Nam, “Optimization of high-order harmonic brightness in the space and time domains,” Phys. Rev. A 69(3), 031805 (2004).
[CrossRef]

R. A. Ganeev, L. Bom, J.-C. Kieffer, and T. Ozaki, “Systematic investigation of resonance-induced single-harmonic enhancement in the extreme-ultraviolet range,” Phys. Rev. A 75(6), 063806 (2007).
[CrossRef]

M. V. Frolov, N. L. Manakov, and A. F. Starace, “Potential barrier effects in high-order harmonic generation by transition-metal ions,” Phys. Rev. A 82(2), 023424 (2010).
[CrossRef]

D. B. Milošević, “Resonant high-order harmonic generation from plasma ablation: Laser intensity dependence of the harmonic intensity and phase,” Phys. Rev. A 81(2), 023802 (2010).
[CrossRef]

M. Tudorovskaya and M. Lein, “High-order harmonic generation in the presence of a resonance,” Phys. Rev. A 84(1), 013430 (2011).
[CrossRef]

R. A. Ganeev, H. Singhal, P. A. Naik, I. A. Kulagin, P. V. Redkin, J. A. Chakera, M. Tayyab, R. A. Khan, and P. D. Gupta, “Enhancement of high-order harmonic generation using a two-color pump in plasma plumes,” Phys. Rev. A 80(3), 033845 (2009).
[CrossRef]

Phys. Rev. Lett. (5)

J. L. Krause, K. J. Schafer, and K. C. Kulander, “High-order harmonic generation from atoms and ions in the high intensity regime,” Phys. Rev. Lett. 68(24), 3535–3538 (1992).
[CrossRef] [PubMed]

P. B. Corkum, “Plasma perspective on strong field multiphoton ionization,” Phys. Rev. Lett. 71(13), 1994–1997 (1993).
[CrossRef] [PubMed]

V. Strelkov, “Role of autoionizing state in resonant high-order harmonic generation and attosecond pulse production,” Phys. Rev. Lett. 104(12), 123901 (2010).
[CrossRef] [PubMed]

I. J. Kim, C. M. Kim, H. T. Kim, G. H. Lee, Y. S. Lee, J. Y. Park, D. J. Cho, and C. H. Nam, “Highly efficient high-harmonic generation in an orthogonally polarized two-color laser field,” Phys. Rev. Lett. 94(24), 243901 (2005).
[CrossRef]

J. Mauritsson, P. Johnsson, E. Gustafsson, A. L’Huillier, K. J. Schafer, and M. B. Gaarde, “Attosecond pulse trains generated using two color laser fields,” Phys. Rev. Lett. 97(1), 013001 (2006).
[CrossRef] [PubMed]

Phys. Scr. (1)

Z. Zeng, R. Li, Y. Cheng, W. Yu, and Z. Xu, “Resonance-enhanced high-order harmonic generation and frequency mixing in two-color laser field,” Phys. Scr. 66(4), 321–325 (2002).
[CrossRef]

Phys. Usp. (1)

R. A. Ganeev, “Generation of high-order harmonics of high-power lasers in plasmas produced under irradiation of solid target surfaces by a prepulse,” Phys. Usp. 52(1), 55–77 (2009).
[CrossRef]

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Figures (6)

Fig. 1
Fig. 1

Experimental setup: HPP, heating pump pulse; FPP, femtosecond probe pulse; M, mirrors; VC, vacuum chamber; T, target; FM, focusing mirror; FFG, flat field grating; MCP, microchannel plate; CCD, charge coupled device.

Fig. 2
Fig. 2

Harmonic spectra from Ag plasma in the cases of (a) apertureless and (b) apertured single color pump (780 nm). (c) Tuning of 17th and 19th harmonics by changing the distance between the gratings in the compressor stage. Positive and negative values of pulse duration correspond to positively and negatively chirped pulses. Dotted lines show the tuning of 17th and 19th harmonics with different chirps. Black lines show the wavelengths of these harmonics at chirp-free conditions. Thick black lines on the left side of bottom graph show the tuning range of 17th harmonic (2.8 nm).

Fig. 3
Fig. 3

(a) Harmonic spectra from Ag plasma using the two-color pump configuration. (b) Optimization of even harmonics with regard to the odd ones in the cutoff region. (c) Harmonic spectra using 200 mm focal length focusing mirror. (d) Harmonics spectra using the 500 mm focal length lens.

Fig. 4
Fig. 4

(a) Harmonic spectra from chromium plasma at different chirps of laser radiation. Positive and negative values of pulse duration correspond to positively and negatively chirped pulses. (b) Harmonic spectrum at over-excited conditions of Cr plasma formation, with ionic lines appearing close to the enhanced 27th and 29th harmonics. The arrow shows one of these lines close to the 27th harmonic.

Fig. 5
Fig. 5

(a) Two-color pump-induced spectra of harmonics from Cr plasma and (b) the spectra obtained at analogous experimental conditions by removing the SH crystal from the path of 780 nm radiation.

Fig. 6
Fig. 6

Variations of harmonic spectra at (a) weak excitation of V target (Ips = 6×109 W cm−2), (b) stronger excitation of target (Ips = 1×1010 W cm−2), and (c) application of two-color pump.

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