S. Nuzzo, M. Zarcone, G. Ferrante, and S. Basile, “Elementary kinetic theory of harmonics generation and wave mixing,” Laser Phys. 10, 254–261 (2000).

V. P. Silin, “Coherent bremsstrahlung generation of harmonics in a laser-produced plasma,” Quantum Electron. 29, 11–18 (1999).

[CrossRef]

C. Figueira de Morisson Faria, M. Dorr, W. Becker, and W. Sandner, “Time-frequency analysis of two-color high-harmonic generation,” Phys. Rev. A 60, 1377–1384 (1999).

[CrossRef]

W. Becker, B. N. Chichkov, and B. Wellegehausen, “Schemes for the generation of circularly polarized high-order harmonics by two-color mixing,” Phys. Rev. A 60, 1721–1722 (1999).

[CrossRef]

V. T. Platonenko and V. V. Strelkov, “High-order harmonic generation in the field of intense laser radiation,” Quantum Electron. 28, 564–583 (1998).

[CrossRef]

X.-M. Tong and S.-I. Chu, “Generation of circularly polarized multiple high-order harmonic emission from two-color crossed laser beams,” Phys. Rev. A 58, R2656–R2659 (1998).

[CrossRef]

V. P. Silin, “On the coherent bremsstrahlung radiation of harmonics in a laser plasma,” JETP 87, 486–494 (1998).

[CrossRef]

G. Ferrante, S. A. Uryupin, M. Zarcone, and P. I. Porshnev, “Harmonic generation in a plasma with laser-heated electron velocity distributions,” J. Opt. Soc. Am. B 14, 1716–1722 (1997).

[CrossRef]

S. Varro and F. Ehlotzky, “Higher harmonic generation at metal surfaces by powerful bichromatic laser fields,” Phys. Rev. A 56, 2439–2442 (1997).

[CrossRef]

J. Z. Kaminski and F. Ehlotzky, “Phase-dependent sidelobes in high-order above-threshold ionization in a bichromatic laser field,” J. Phys. B 30, 5729–5735 (1997).

[CrossRef]

W.-C. Liu and C. W. Clark, “Intensity dependence of the phase of harmonics in one- and two-frequency laser fields,” Phys. Rev. A 53, 3582–3586 (1996).

[CrossRef]
[PubMed]

D. B. Milosevic and B. Piraux, “High-order harmonic generation in a bichromatic elliptically polarized laser field,” Phys. Rev. A 54, 1522–1531 (1996).

[CrossRef]
[PubMed]

M. B. Gaarde, A. L’Huillier, and M. Lewenstein, “Theory of high-order sum and difference frequency mixing in a strong bichromatic laser field,” Phys. Rev. A 54, 4236–4248 (1996).

[CrossRef]
[PubMed]

S. G. Preston, A. Sanpera, M. Zepf, W. J. Blyth, C. G. Smith, J. S. Wark, M. H. Key, K. Burnett, M. Nakai, D. Neely, and A. A. Offenberger, “High-order harmonics of 248.6-nm KrF laser from helium and neon ions,” Phys. Rev. A 53, R31–R34 (1996).

[CrossRef]
[PubMed]

I. P. Christov, J. Zhou, J. Peatross, A. Rumdequist, M. M. Murname, and H. C. Kapteyn, “Nonadiabatic effects in high-harmonic generation with ultrashort pulses,” Phys. Rev. Lett. 77, 1743–1746 (1996).

[CrossRef]
[PubMed]

M. Protopapas, P. L. Knight, and K. Burnett, “Phase dependence in two-color excitation of a model atom by intense fields,” Phys. Rev. A 49, 1945–1949 (1994).

[CrossRef]
[PubMed]

D. W. Schumacher, F. Weihe, H. G. Muller, and P. H. Bucksbaum, “Phase dependence of intense field ionization: a study using two colors,” Phys. Rev. Lett. 73, 1344–1347 (1994).

[CrossRef]
[PubMed]

K. Kondo, T. Tamida, Y. Nabekawa, and S. Watanabe, “High-order harmonic generation and ionization using ultrashort KrF and Ti:sapphire lasers,” Phys. Rev. A 49, 3881–3889 (1994).

[CrossRef]
[PubMed]

E. Charron, A. Giusti-Suzor, and F. H. Mies, “Two-color coherent control of H_{2}^{+} photodissociation in intense laser fields,” Phys. Rev. Lett. 71, 692–695 (1993).

[CrossRef]
[PubMed]

A. L’Huiller and Ph. Balcou, “High-order harmonic generation in rare gases with a 1-ps 1053-nm laser,” Phys. Rev. Lett. 70, 774–777 (1993).

[CrossRef]

K. Kondo, N. Sarukura, K. Sajiki, and S. Watanabe, “High-order harmonic generation by ultrashort KrF and Ti:sapphire lasers,” Phys. Rev. A 47, R2480–R2483 (1993).

[CrossRef]
[PubMed]

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, 3535–3538 (1992).

[CrossRef]
[PubMed]

J. K. Crane, M. D. Perry, S. Herman, and R. W. Falcone, “High-order harmonic generation in helium,” Opt. Lett. 17, 1256–1258 (1992).

[CrossRef]
[PubMed]

B. N. Chichkov, S. A. Shumsky, and S. A. Uryupin, “Nonstationary electron distribution functions in a laser field,” Phys. Rev. A 45, 7475–7479 (1992).

[CrossRef]
[PubMed]

V. P. Silin, “Nonlinear high-frequency plasma conductivity,” Sov. Phys. JETP 20, 1510–1516 (1965).

A. L’Huiller and Ph. Balcou, “High-order harmonic generation in rare gases with a 1-ps 1053-nm laser,” Phys. Rev. Lett. 70, 774–777 (1993).

[CrossRef]

S. Nuzzo, M. Zarcone, G. Ferrante, and S. Basile, “Elementary kinetic theory of harmonics generation and wave mixing,” Laser Phys. 10, 254–261 (2000).

C. Figueira de Morisson Faria, M. Dorr, W. Becker, and W. Sandner, “Time-frequency analysis of two-color high-harmonic generation,” Phys. Rev. A 60, 1377–1384 (1999).

[CrossRef]

W. Becker, B. N. Chichkov, and B. Wellegehausen, “Schemes for the generation of circularly polarized high-order harmonics by two-color mixing,” Phys. Rev. A 60, 1721–1722 (1999).

[CrossRef]

S. G. Preston, A. Sanpera, M. Zepf, W. J. Blyth, C. G. Smith, J. S. Wark, M. H. Key, K. Burnett, M. Nakai, D. Neely, and A. A. Offenberger, “High-order harmonics of 248.6-nm KrF laser from helium and neon ions,” Phys. Rev. A 53, R31–R34 (1996).

[CrossRef]
[PubMed]

D. W. Schumacher, F. Weihe, H. G. Muller, and P. H. Bucksbaum, “Phase dependence of intense field ionization: a study using two colors,” Phys. Rev. Lett. 73, 1344–1347 (1994).

[CrossRef]
[PubMed]

S. G. Preston, A. Sanpera, M. Zepf, W. J. Blyth, C. G. Smith, J. S. Wark, M. H. Key, K. Burnett, M. Nakai, D. Neely, and A. A. Offenberger, “High-order harmonics of 248.6-nm KrF laser from helium and neon ions,” Phys. Rev. A 53, R31–R34 (1996).

[CrossRef]
[PubMed]

M. Protopapas, P. L. Knight, and K. Burnett, “Phase dependence in two-color excitation of a model atom by intense fields,” Phys. Rev. A 49, 1945–1949 (1994).

[CrossRef]
[PubMed]

E. Charron, A. Giusti-Suzor, and F. H. Mies, “Two-color coherent control of H_{2}^{+} photodissociation in intense laser fields,” Phys. Rev. Lett. 71, 692–695 (1993).

[CrossRef]
[PubMed]

W. Becker, B. N. Chichkov, and B. Wellegehausen, “Schemes for the generation of circularly polarized high-order harmonics by two-color mixing,” Phys. Rev. A 60, 1721–1722 (1999).

[CrossRef]

B. N. Chichkov, S. A. Shumsky, and S. A. Uryupin, “Nonstationary electron distribution functions in a laser field,” Phys. Rev. A 45, 7475–7479 (1992).

[CrossRef]
[PubMed]

I. P. Christov, J. Zhou, J. Peatross, A. Rumdequist, M. M. Murname, and H. C. Kapteyn, “Nonadiabatic effects in high-harmonic generation with ultrashort pulses,” Phys. Rev. Lett. 77, 1743–1746 (1996).

[CrossRef]
[PubMed]

X.-M. Tong and S.-I. Chu, “Generation of circularly polarized multiple high-order harmonic emission from two-color crossed laser beams,” Phys. Rev. A 58, R2656–R2659 (1998).

[CrossRef]

W.-C. Liu and C. W. Clark, “Intensity dependence of the phase of harmonics in one- and two-frequency laser fields,” Phys. Rev. A 53, 3582–3586 (1996).

[CrossRef]
[PubMed]

C. Figueira de Morisson Faria, M. Dorr, W. Becker, and W. Sandner, “Time-frequency analysis of two-color high-harmonic generation,” Phys. Rev. A 60, 1377–1384 (1999).

[CrossRef]

J. Z. Kaminski and F. Ehlotzky, “Phase-dependent sidelobes in high-order above-threshold ionization in a bichromatic laser field,” J. Phys. B 30, 5729–5735 (1997).

[CrossRef]

S. Varro and F. Ehlotzky, “Higher harmonic generation at metal surfaces by powerful bichromatic laser fields,” Phys. Rev. A 56, 2439–2442 (1997).

[CrossRef]

S. Nuzzo, M. Zarcone, G. Ferrante, and S. Basile, “Elementary kinetic theory of harmonics generation and wave mixing,” Laser Phys. 10, 254–261 (2000).

G. Ferrante, S. A. Uryupin, M. Zarcone, and P. I. Porshnev, “Harmonic generation in a plasma with laser-heated electron velocity distributions,” J. Opt. Soc. Am. B 14, 1716–1722 (1997).

[CrossRef]

C. Figueira de Morisson Faria, M. Dorr, W. Becker, and W. Sandner, “Time-frequency analysis of two-color high-harmonic generation,” Phys. Rev. A 60, 1377–1384 (1999).

[CrossRef]

M. B. Gaarde, A. L’Huillier, and M. Lewenstein, “Theory of high-order sum and difference frequency mixing in a strong bichromatic laser field,” Phys. Rev. A 54, 4236–4248 (1996).

[CrossRef]
[PubMed]

E. Charron, A. Giusti-Suzor, and F. H. Mies, “Two-color coherent control of H_{2}^{+} photodissociation in intense laser fields,” Phys. Rev. Lett. 71, 692–695 (1993).

[CrossRef]
[PubMed]

J. Z. Kaminski and F. Ehlotzky, “Phase-dependent sidelobes in high-order above-threshold ionization in a bichromatic laser field,” J. Phys. B 30, 5729–5735 (1997).

[CrossRef]

I. P. Christov, J. Zhou, J. Peatross, A. Rumdequist, M. M. Murname, and H. C. Kapteyn, “Nonadiabatic effects in high-harmonic generation with ultrashort pulses,” Phys. Rev. Lett. 77, 1743–1746 (1996).

[CrossRef]
[PubMed]

S. G. Preston, A. Sanpera, M. Zepf, W. J. Blyth, C. G. Smith, J. S. Wark, M. H. Key, K. Burnett, M. Nakai, D. Neely, and A. A. Offenberger, “High-order harmonics of 248.6-nm KrF laser from helium and neon ions,” Phys. Rev. A 53, R31–R34 (1996).

[CrossRef]
[PubMed]

M. Protopapas, P. L. Knight, and K. Burnett, “Phase dependence in two-color excitation of a model atom by intense fields,” Phys. Rev. A 49, 1945–1949 (1994).

[CrossRef]
[PubMed]

K. Kondo, T. Tamida, Y. Nabekawa, and S. Watanabe, “High-order harmonic generation and ionization using ultrashort KrF and Ti:sapphire lasers,” Phys. Rev. A 49, 3881–3889 (1994).

[CrossRef]
[PubMed]

K. Kondo, N. Sarukura, K. Sajiki, and S. Watanabe, “High-order harmonic generation by ultrashort KrF and Ti:sapphire lasers,” Phys. Rev. A 47, R2480–R2483 (1993).

[CrossRef]
[PubMed]

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, 3535–3538 (1992).

[CrossRef]
[PubMed]

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, 3535–3538 (1992).

[CrossRef]
[PubMed]

A. L’Huiller and Ph. Balcou, “High-order harmonic generation in rare gases with a 1-ps 1053-nm laser,” Phys. Rev. Lett. 70, 774–777 (1993).

[CrossRef]

M. B. Gaarde, A. L’Huillier, and M. Lewenstein, “Theory of high-order sum and difference frequency mixing in a strong bichromatic laser field,” Phys. Rev. A 54, 4236–4248 (1996).

[CrossRef]
[PubMed]

M. B. Gaarde, A. L’Huillier, and M. Lewenstein, “Theory of high-order sum and difference frequency mixing in a strong bichromatic laser field,” Phys. Rev. A 54, 4236–4248 (1996).

[CrossRef]
[PubMed]

W.-C. Liu and C. W. Clark, “Intensity dependence of the phase of harmonics in one- and two-frequency laser fields,” Phys. Rev. A 53, 3582–3586 (1996).

[CrossRef]
[PubMed]

E. Charron, A. Giusti-Suzor, and F. H. Mies, “Two-color coherent control of H_{2}^{+} photodissociation in intense laser fields,” Phys. Rev. Lett. 71, 692–695 (1993).

[CrossRef]
[PubMed]

D. B. Milosevic and B. Piraux, “High-order harmonic generation in a bichromatic elliptically polarized laser field,” Phys. Rev. A 54, 1522–1531 (1996).

[CrossRef]
[PubMed]

D. W. Schumacher, F. Weihe, H. G. Muller, and P. H. Bucksbaum, “Phase dependence of intense field ionization: a study using two colors,” Phys. Rev. Lett. 73, 1344–1347 (1994).

[CrossRef]
[PubMed]

I. P. Christov, J. Zhou, J. Peatross, A. Rumdequist, M. M. Murname, and H. C. Kapteyn, “Nonadiabatic effects in high-harmonic generation with ultrashort pulses,” Phys. Rev. Lett. 77, 1743–1746 (1996).

[CrossRef]
[PubMed]

K. Kondo, T. Tamida, Y. Nabekawa, and S. Watanabe, “High-order harmonic generation and ionization using ultrashort KrF and Ti:sapphire lasers,” Phys. Rev. A 49, 3881–3889 (1994).

[CrossRef]
[PubMed]

S. G. Preston, A. Sanpera, M. Zepf, W. J. Blyth, C. G. Smith, J. S. Wark, M. H. Key, K. Burnett, M. Nakai, D. Neely, and A. A. Offenberger, “High-order harmonics of 248.6-nm KrF laser from helium and neon ions,” Phys. Rev. A 53, R31–R34 (1996).

[CrossRef]
[PubMed]

S. G. Preston, A. Sanpera, M. Zepf, W. J. Blyth, C. G. Smith, J. S. Wark, M. H. Key, K. Burnett, M. Nakai, D. Neely, and A. A. Offenberger, “High-order harmonics of 248.6-nm KrF laser from helium and neon ions,” Phys. Rev. A 53, R31–R34 (1996).

[CrossRef]
[PubMed]

S. Nuzzo, M. Zarcone, G. Ferrante, and S. Basile, “Elementary kinetic theory of harmonics generation and wave mixing,” Laser Phys. 10, 254–261 (2000).

S. G. Preston, A. Sanpera, M. Zepf, W. J. Blyth, C. G. Smith, J. S. Wark, M. H. Key, K. Burnett, M. Nakai, D. Neely, and A. A. Offenberger, “High-order harmonics of 248.6-nm KrF laser from helium and neon ions,” Phys. Rev. A 53, R31–R34 (1996).

[CrossRef]
[PubMed]

I. P. Christov, J. Zhou, J. Peatross, A. Rumdequist, M. M. Murname, and H. C. Kapteyn, “Nonadiabatic effects in high-harmonic generation with ultrashort pulses,” Phys. Rev. Lett. 77, 1743–1746 (1996).

[CrossRef]
[PubMed]

D. B. Milosevic and B. Piraux, “High-order harmonic generation in a bichromatic elliptically polarized laser field,” Phys. Rev. A 54, 1522–1531 (1996).

[CrossRef]
[PubMed]

V. T. Platonenko and V. V. Strelkov, “High-order harmonic generation in the field of intense laser radiation,” Quantum Electron. 28, 564–583 (1998).

[CrossRef]

S. G. Preston, A. Sanpera, M. Zepf, W. J. Blyth, C. G. Smith, J. S. Wark, M. H. Key, K. Burnett, M. Nakai, D. Neely, and A. A. Offenberger, “High-order harmonics of 248.6-nm KrF laser from helium and neon ions,” Phys. Rev. A 53, R31–R34 (1996).

[CrossRef]
[PubMed]

M. Protopapas, P. L. Knight, and K. Burnett, “Phase dependence in two-color excitation of a model atom by intense fields,” Phys. Rev. A 49, 1945–1949 (1994).

[CrossRef]
[PubMed]

I. P. Christov, J. Zhou, J. Peatross, A. Rumdequist, M. M. Murname, and H. C. Kapteyn, “Nonadiabatic effects in high-harmonic generation with ultrashort pulses,” Phys. Rev. Lett. 77, 1743–1746 (1996).

[CrossRef]
[PubMed]

K. Kondo, N. Sarukura, K. Sajiki, and S. Watanabe, “High-order harmonic generation by ultrashort KrF and Ti:sapphire lasers,” Phys. Rev. A 47, R2480–R2483 (1993).

[CrossRef]
[PubMed]

C. Figueira de Morisson Faria, M. Dorr, W. Becker, and W. Sandner, “Time-frequency analysis of two-color high-harmonic generation,” Phys. Rev. A 60, 1377–1384 (1999).

[CrossRef]

S. G. Preston, A. Sanpera, M. Zepf, W. J. Blyth, C. G. Smith, J. S. Wark, M. H. Key, K. Burnett, M. Nakai, D. Neely, and A. A. Offenberger, “High-order harmonics of 248.6-nm KrF laser from helium and neon ions,” Phys. Rev. A 53, R31–R34 (1996).

[CrossRef]
[PubMed]

K. Kondo, N. Sarukura, K. Sajiki, and S. Watanabe, “High-order harmonic generation by ultrashort KrF and Ti:sapphire lasers,” Phys. Rev. A 47, R2480–R2483 (1993).

[CrossRef]
[PubMed]

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, 3535–3538 (1992).

[CrossRef]
[PubMed]

D. W. Schumacher, F. Weihe, H. G. Muller, and P. H. Bucksbaum, “Phase dependence of intense field ionization: a study using two colors,” Phys. Rev. Lett. 73, 1344–1347 (1994).

[CrossRef]
[PubMed]

B. N. Chichkov, S. A. Shumsky, and S. A. Uryupin, “Nonstationary electron distribution functions in a laser field,” Phys. Rev. A 45, 7475–7479 (1992).

[CrossRef]
[PubMed]

V. P. Silin, “Coherent bremsstrahlung generation of harmonics in a laser-produced plasma,” Quantum Electron. 29, 11–18 (1999).

[CrossRef]

V. P. Silin, “On the coherent bremsstrahlung radiation of harmonics in a laser plasma,” JETP 87, 486–494 (1998).

[CrossRef]

V. P. Silin, “Nonlinear high-frequency plasma conductivity,” Sov. Phys. JETP 20, 1510–1516 (1965).

S. G. Preston, A. Sanpera, M. Zepf, W. J. Blyth, C. G. Smith, J. S. Wark, M. H. Key, K. Burnett, M. Nakai, D. Neely, and A. A. Offenberger, “High-order harmonics of 248.6-nm KrF laser from helium and neon ions,” Phys. Rev. A 53, R31–R34 (1996).

[CrossRef]
[PubMed]

V. T. Platonenko and V. V. Strelkov, “High-order harmonic generation in the field of intense laser radiation,” Quantum Electron. 28, 564–583 (1998).

[CrossRef]

K. Kondo, T. Tamida, Y. Nabekawa, and S. Watanabe, “High-order harmonic generation and ionization using ultrashort KrF and Ti:sapphire lasers,” Phys. Rev. A 49, 3881–3889 (1994).

[CrossRef]
[PubMed]

X.-M. Tong and S.-I. Chu, “Generation of circularly polarized multiple high-order harmonic emission from two-color crossed laser beams,” Phys. Rev. A 58, R2656–R2659 (1998).

[CrossRef]

G. Ferrante, S. A. Uryupin, M. Zarcone, and P. I. Porshnev, “Harmonic generation in a plasma with laser-heated electron velocity distributions,” J. Opt. Soc. Am. B 14, 1716–1722 (1997).

[CrossRef]

B. N. Chichkov, S. A. Shumsky, and S. A. Uryupin, “Nonstationary electron distribution functions in a laser field,” Phys. Rev. A 45, 7475–7479 (1992).

[CrossRef]
[PubMed]

S. Varro and F. Ehlotzky, “Higher harmonic generation at metal surfaces by powerful bichromatic laser fields,” Phys. Rev. A 56, 2439–2442 (1997).

[CrossRef]

S. G. Preston, A. Sanpera, M. Zepf, W. J. Blyth, C. G. Smith, J. S. Wark, M. H. Key, K. Burnett, M. Nakai, D. Neely, and A. A. Offenberger, “High-order harmonics of 248.6-nm KrF laser from helium and neon ions,” Phys. Rev. A 53, R31–R34 (1996).

[CrossRef]
[PubMed]

K. Kondo, T. Tamida, Y. Nabekawa, and S. Watanabe, “High-order harmonic generation and ionization using ultrashort KrF and Ti:sapphire lasers,” Phys. Rev. A 49, 3881–3889 (1994).

[CrossRef]
[PubMed]

K. Kondo, N. Sarukura, K. Sajiki, and S. Watanabe, “High-order harmonic generation by ultrashort KrF and Ti:sapphire lasers,” Phys. Rev. A 47, R2480–R2483 (1993).

[CrossRef]
[PubMed]

D. W. Schumacher, F. Weihe, H. G. Muller, and P. H. Bucksbaum, “Phase dependence of intense field ionization: a study using two colors,” Phys. Rev. Lett. 73, 1344–1347 (1994).

[CrossRef]
[PubMed]

W. Becker, B. N. Chichkov, and B. Wellegehausen, “Schemes for the generation of circularly polarized high-order harmonics by two-color mixing,” Phys. Rev. A 60, 1721–1722 (1999).

[CrossRef]

S. Nuzzo, M. Zarcone, G. Ferrante, and S. Basile, “Elementary kinetic theory of harmonics generation and wave mixing,” Laser Phys. 10, 254–261 (2000).

G. Ferrante, S. A. Uryupin, M. Zarcone, and P. I. Porshnev, “Harmonic generation in a plasma with laser-heated electron velocity distributions,” J. Opt. Soc. Am. B 14, 1716–1722 (1997).

[CrossRef]

S. G. Preston, A. Sanpera, M. Zepf, W. J. Blyth, C. G. Smith, J. S. Wark, M. H. Key, K. Burnett, M. Nakai, D. Neely, and A. A. Offenberger, “High-order harmonics of 248.6-nm KrF laser from helium and neon ions,” Phys. Rev. A 53, R31–R34 (1996).

[CrossRef]
[PubMed]

I. P. Christov, J. Zhou, J. Peatross, A. Rumdequist, M. M. Murname, and H. C. Kapteyn, “Nonadiabatic effects in high-harmonic generation with ultrashort pulses,” Phys. Rev. Lett. 77, 1743–1746 (1996).

[CrossRef]
[PubMed]

J. Z. Kaminski and F. Ehlotzky, “Phase-dependent sidelobes in high-order above-threshold ionization in a bichromatic laser field,” J. Phys. B 30, 5729–5735 (1997).

[CrossRef]

V. P. Silin, “On the coherent bremsstrahlung radiation of harmonics in a laser plasma,” JETP 87, 486–494 (1998).

[CrossRef]

S. Nuzzo, M. Zarcone, G. Ferrante, and S. Basile, “Elementary kinetic theory of harmonics generation and wave mixing,” Laser Phys. 10, 254–261 (2000).

M. Protopapas, P. L. Knight, and K. Burnett, “Phase dependence in two-color excitation of a model atom by intense fields,” Phys. Rev. A 49, 1945–1949 (1994).

[CrossRef]
[PubMed]

K. Kondo, N. Sarukura, K. Sajiki, and S. Watanabe, “High-order harmonic generation by ultrashort KrF and Ti:sapphire lasers,” Phys. Rev. A 47, R2480–R2483 (1993).

[CrossRef]
[PubMed]

S. G. Preston, A. Sanpera, M. Zepf, W. J. Blyth, C. G. Smith, J. S. Wark, M. H. Key, K. Burnett, M. Nakai, D. Neely, and A. A. Offenberger, “High-order harmonics of 248.6-nm KrF laser from helium and neon ions,” Phys. Rev. A 53, R31–R34 (1996).

[CrossRef]
[PubMed]

K. Kondo, T. Tamida, Y. Nabekawa, and S. Watanabe, “High-order harmonic generation and ionization using ultrashort KrF and Ti:sapphire lasers,” Phys. Rev. A 49, 3881–3889 (1994).

[CrossRef]
[PubMed]

W.-C. Liu and C. W. Clark, “Intensity dependence of the phase of harmonics in one- and two-frequency laser fields,” Phys. Rev. A 53, 3582–3586 (1996).

[CrossRef]
[PubMed]

D. B. Milosevic and B. Piraux, “High-order harmonic generation in a bichromatic elliptically polarized laser field,” Phys. Rev. A 54, 1522–1531 (1996).

[CrossRef]
[PubMed]

M. B. Gaarde, A. L’Huillier, and M. Lewenstein, “Theory of high-order sum and difference frequency mixing in a strong bichromatic laser field,” Phys. Rev. A 54, 4236–4248 (1996).

[CrossRef]
[PubMed]

S. Varro and F. Ehlotzky, “Higher harmonic generation at metal surfaces by powerful bichromatic laser fields,” Phys. Rev. A 56, 2439–2442 (1997).

[CrossRef]

X.-M. Tong and S.-I. Chu, “Generation of circularly polarized multiple high-order harmonic emission from two-color crossed laser beams,” Phys. Rev. A 58, R2656–R2659 (1998).

[CrossRef]

C. Figueira de Morisson Faria, M. Dorr, W. Becker, and W. Sandner, “Time-frequency analysis of two-color high-harmonic generation,” Phys. Rev. A 60, 1377–1384 (1999).

[CrossRef]

W. Becker, B. N. Chichkov, and B. Wellegehausen, “Schemes for the generation of circularly polarized high-order harmonics by two-color mixing,” Phys. Rev. A 60, 1721–1722 (1999).

[CrossRef]

B. N. Chichkov, S. A. Shumsky, and S. A. Uryupin, “Nonstationary electron distribution functions in a laser field,” Phys. Rev. A 45, 7475–7479 (1992).

[CrossRef]
[PubMed]

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, 3535–3538 (1992).

[CrossRef]
[PubMed]

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