S. G. Preston and J. B. Watson, “Generation of harmonic quasi-continuum from beating laser fields,” J. Phys. B 31, 2247–2257 (1998).

[CrossRef]

E. Cormier and P. Lambropoulos, “Above-threshold ioniza- tion spectrum of hydrogen using b-spline functions,” J. Phys. B 30, 77–91 (1997).

[CrossRef]

E. Cormier and P. Lambropoulos, “Effect of strong dressing field on the polarizability of atomic helium at harmonic frequencies,” J. Phys. B 30, 3095–3106 (1997).

[CrossRef]

K. J. Schafer and K. C. Kulander, “High harmonic generation from ultrafast pump lasers,” Phys. Rev. Lett. 78, 638–641 (1997).

[CrossRef]

C. Figueira de Morisson Faria, M. Dörr, and W. Sandner, “Time profile of harmonic generation,” Phys. Rev. A 55, 3961–3963 (1997).

[CrossRef]

Ph. Antoine, B. Piraux, D. B. Milosevic, and M. Gadja, “Generation of ultrashort pulses of harmonics,” Phys. Rev. A 54, R1761–R1764 (1996).

[CrossRef]
[PubMed]

M. B. Gaarde, P. Antoine, A. Persson, B. Carre, A. L’Huillier, and C. G. Wahlstrom, “High-order tunable sum and difference frequency mixing in the xuv region,” J. Phys. B 29, L163–L168 (1996).

[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. Protopapas, A. Sanpera, P. L. Knight, and K. Burnett, “High intensity two color interactions in the tunneling and stabilization regimes,” Phys. Rev. A 52, R2527–R2530 (1995).

[CrossRef]

H. Eichmann, A. Egbert, S. Nolte, C. Momma, B. Welleghausen, W. Becker, S. Long, and J. K. McIver, “Polarization-dependent high-order two color mixing,” Phys. Rev. A 51, R3414–R3417 (1995).

[CrossRef]

P. Antoine, B. Piraux, and A. Maquet, “Time profile of harmonics generated by a single atom in strong electromagnetic field,” Phys. Rev. A 51, R1750–R1753 (1995).

[CrossRef]

M. Lewenstein, P. Salieres, and A. L’Huillier, “Phase of the atomic polarization in high-order harmonic generation,” Phys. Rev. A 52, 4747–4754 (1995).

[CrossRef]
[PubMed]

M. Lewenstein, P. Balcou, M. Yu Ivanov, A. L’Huillier, and P. B. Corkum, “Theory of high harmonic generation by low-frequency laser fields,” Phys. Rev. A 49, 2117–2132 (1994).

[CrossRef]
[PubMed]

S. C. Rae, K. Burnett, and J. Cooper, “Generation and propagation of high-order harmonics in a rapidly ionizing medium,” Phys. Rev. A 50, 3438–3446 (1994).

[CrossRef]
[PubMed]

H. Eichmann, S. Meyer, K. Riepl, C. Momma, and B. Wellegehausen, “Generation of short-pulse tunable xuv radiation by high-order frequency mixing,” Phys. Rev. A 50, R2834–R2836 (1994).

[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]

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

[CrossRef]
[PubMed]

M. D. Perry and J. K. Crane, “High-order harmonic emission from mixed fields,” Phys. Rev. A 48, R4051–R4054 (1993).

[CrossRef]

K. Burnett, V. C. Reed, J. Cooper, and P. L. Knight, “Calculation of the background emitted during high-harmonic generation,” Phys. Rev. A 45, 3347–3349 (1992).

[CrossRef]
[PubMed]

M. B. Gaarde, P. Antoine, A. Persson, B. Carre, A. L’Huillier, and C. G. Wahlstrom, “High-order tunable sum and difference frequency mixing in the xuv region,” J. Phys. B 29, L163–L168 (1996).

[CrossRef]

P. Antoine, B. Piraux, and A. Maquet, “Time profile of harmonics generated by a single atom in strong electromagnetic field,” Phys. Rev. A 51, R1750–R1753 (1995).

[CrossRef]

Ph. Antoine, B. Piraux, D. B. Milosevic, and M. Gadja, “Generation of ultrashort pulses of harmonics,” Phys. Rev. A 54, R1761–R1764 (1996).

[CrossRef]
[PubMed]

M. Lewenstein, P. Balcou, M. Yu Ivanov, A. L’Huillier, and P. B. Corkum, “Theory of high harmonic generation by low-frequency laser fields,” Phys. Rev. A 49, 2117–2132 (1994).

[CrossRef]
[PubMed]

H. Eichmann, A. Egbert, S. Nolte, C. Momma, B. Welleghausen, W. Becker, S. Long, and J. K. McIver, “Polarization-dependent high-order two color mixing,” Phys. Rev. A 51, R3414–R3417 (1995).

[CrossRef]

M. Protopapas, A. Sanpera, P. L. Knight, and K. Burnett, “High intensity two color interactions in the tunneling and stabilization regimes,” Phys. Rev. A 52, R2527–R2530 (1995).

[CrossRef]

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]

S. C. Rae, K. Burnett, and J. Cooper, “Generation and propagation of high-order harmonics in a rapidly ionizing medium,” Phys. Rev. A 50, 3438–3446 (1994).

[CrossRef]
[PubMed]

K. Burnett, V. C. Reed, J. Cooper, and P. L. Knight, “Calculation of the background emitted during high-harmonic generation,” Phys. Rev. A 45, 3347–3349 (1992).

[CrossRef]
[PubMed]

M. B. Gaarde, P. Antoine, A. Persson, B. Carre, A. L’Huillier, and C. G. Wahlstrom, “High-order tunable sum and difference frequency mixing in the xuv region,” J. Phys. B 29, L163–L168 (1996).

[CrossRef]

S. C. Rae, K. Burnett, and J. Cooper, “Generation and propagation of high-order harmonics in a rapidly ionizing medium,” Phys. Rev. A 50, 3438–3446 (1994).

[CrossRef]
[PubMed]

K. Burnett, V. C. Reed, J. Cooper, and P. L. Knight, “Calculation of the background emitted during high-harmonic generation,” Phys. Rev. A 45, 3347–3349 (1992).

[CrossRef]
[PubMed]

M. Lewenstein, P. Balcou, M. Yu Ivanov, A. L’Huillier, and P. B. Corkum, “Theory of high harmonic generation by low-frequency laser fields,” Phys. Rev. A 49, 2117–2132 (1994).

[CrossRef]
[PubMed]

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

[CrossRef]
[PubMed]

E. Cormier and P. Lambropoulos, “Effect of strong dressing field on the polarizability of atomic helium at harmonic frequencies,” J. Phys. B 30, 3095–3106 (1997).

[CrossRef]

E. Cormier and P. Lambropoulos, “Above-threshold ioniza- tion spectrum of hydrogen using b-spline functions,” J. Phys. B 30, 77–91 (1997).

[CrossRef]

M. D. Perry and J. K. Crane, “High-order harmonic emission from mixed fields,” Phys. Rev. A 48, R4051–R4054 (1993).

[CrossRef]

C. Figueira de Morisson Faria, M. Dörr, and W. Sandner, “Time profile of harmonic generation,” Phys. Rev. A 55, 3961–3963 (1997).

[CrossRef]

H. Eichmann, A. Egbert, S. Nolte, C. Momma, B. Welleghausen, W. Becker, S. Long, and J. K. McIver, “Polarization-dependent high-order two color mixing,” Phys. Rev. A 51, R3414–R3417 (1995).

[CrossRef]

H. Eichmann, A. Egbert, S. Nolte, C. Momma, B. Welleghausen, W. Becker, S. Long, and J. K. McIver, “Polarization-dependent high-order two color mixing,” Phys. Rev. A 51, R3414–R3417 (1995).

[CrossRef]

H. Eichmann, S. Meyer, K. Riepl, C. Momma, and B. Wellegehausen, “Generation of short-pulse tunable xuv radiation by high-order frequency mixing,” Phys. Rev. A 50, R2834–R2836 (1994).

[CrossRef]
[PubMed]

C. Figueira de Morisson Faria, M. Dörr, and W. Sandner, “Time profile of harmonic generation,” Phys. Rev. A 55, 3961–3963 (1997).

[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, P. Antoine, A. Persson, B. Carre, A. L’Huillier, and C. G. Wahlstrom, “High-order tunable sum and difference frequency mixing in the xuv region,” J. Phys. B 29, L163–L168 (1996).

[CrossRef]

Ph. Antoine, B. Piraux, D. B. Milosevic, and M. Gadja, “Generation of ultrashort pulses of harmonics,” Phys. Rev. A 54, R1761–R1764 (1996).

[CrossRef]
[PubMed]

M. Lewenstein, P. Balcou, M. Yu Ivanov, A. L’Huillier, and P. B. Corkum, “Theory of high harmonic generation by low-frequency laser fields,” Phys. Rev. A 49, 2117–2132 (1994).

[CrossRef]
[PubMed]

M. Protopapas, A. Sanpera, P. L. Knight, and K. Burnett, “High intensity two color interactions in the tunneling and stabilization regimes,” Phys. Rev. A 52, R2527–R2530 (1995).

[CrossRef]

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. Burnett, V. C. Reed, J. Cooper, and P. L. Knight, “Calculation of the background emitted during high-harmonic generation,” Phys. Rev. A 45, 3347–3349 (1992).

[CrossRef]
[PubMed]

K. J. Schafer and K. C. Kulander, “High harmonic generation from ultrafast pump lasers,” Phys. Rev. Lett. 78, 638–641 (1997).

[CrossRef]

M. B. Gaarde, P. Antoine, A. Persson, B. Carre, A. L’Huillier, and C. G. Wahlstrom, “High-order tunable sum and difference frequency mixing in the xuv region,” J. Phys. B 29, L163–L168 (1996).

[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. Lewenstein, P. Salieres, and A. L’Huillier, “Phase of the atomic polarization in high-order harmonic generation,” Phys. Rev. A 52, 4747–4754 (1995).

[CrossRef]
[PubMed]

M. Lewenstein, P. Balcou, M. Yu Ivanov, A. L’Huillier, and P. B. Corkum, “Theory of high harmonic generation by low-frequency laser fields,” Phys. Rev. A 49, 2117–2132 (1994).

[CrossRef]
[PubMed]

E. Cormier and P. Lambropoulos, “Above-threshold ioniza- tion spectrum of hydrogen using b-spline functions,” J. Phys. B 30, 77–91 (1997).

[CrossRef]

E. Cormier and P. Lambropoulos, “Effect of strong dressing field on the polarizability of atomic helium at harmonic frequencies,” J. Phys. B 30, 3095–3106 (1997).

[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. Lewenstein, P. Salieres, and A. L’Huillier, “Phase of the atomic polarization in high-order harmonic generation,” Phys. Rev. A 52, 4747–4754 (1995).

[CrossRef]
[PubMed]

M. Lewenstein, P. Balcou, M. Yu Ivanov, A. L’Huillier, and P. B. Corkum, “Theory of high harmonic generation by low-frequency laser fields,” Phys. Rev. A 49, 2117–2132 (1994).

[CrossRef]
[PubMed]

H. Eichmann, A. Egbert, S. Nolte, C. Momma, B. Welleghausen, W. Becker, S. Long, and J. K. McIver, “Polarization-dependent high-order two color mixing,” Phys. Rev. A 51, R3414–R3417 (1995).

[CrossRef]

P. Antoine, B. Piraux, and A. Maquet, “Time profile of harmonics generated by a single atom in strong electromagnetic field,” Phys. Rev. A 51, R1750–R1753 (1995).

[CrossRef]

H. Eichmann, A. Egbert, S. Nolte, C. Momma, B. Welleghausen, W. Becker, S. Long, and J. K. McIver, “Polarization-dependent high-order two color mixing,” Phys. Rev. A 51, R3414–R3417 (1995).

[CrossRef]

H. Eichmann, S. Meyer, K. Riepl, C. Momma, and B. Wellegehausen, “Generation of short-pulse tunable xuv radiation by high-order frequency mixing,” Phys. Rev. A 50, R2834–R2836 (1994).

[CrossRef]
[PubMed]

Ph. Antoine, B. Piraux, D. B. Milosevic, and M. Gadja, “Generation of ultrashort pulses of harmonics,” Phys. Rev. A 54, R1761–R1764 (1996).

[CrossRef]
[PubMed]

H. Eichmann, A. Egbert, S. Nolte, C. Momma, B. Welleghausen, W. Becker, S. Long, and J. K. McIver, “Polarization-dependent high-order two color mixing,” Phys. Rev. A 51, R3414–R3417 (1995).

[CrossRef]

H. Eichmann, S. Meyer, K. Riepl, C. Momma, and B. Wellegehausen, “Generation of short-pulse tunable xuv radiation by high-order frequency mixing,” Phys. Rev. A 50, R2834–R2836 (1994).

[CrossRef]
[PubMed]

H. Eichmann, A. Egbert, S. Nolte, C. Momma, B. Welleghausen, W. Becker, S. Long, and J. K. McIver, “Polarization-dependent high-order two color mixing,” Phys. Rev. A 51, R3414–R3417 (1995).

[CrossRef]

M. D. Perry and J. K. Crane, “High-order harmonic emission from mixed fields,” Phys. Rev. A 48, R4051–R4054 (1993).

[CrossRef]

M. B. Gaarde, P. Antoine, A. Persson, B. Carre, A. L’Huillier, and C. G. Wahlstrom, “High-order tunable sum and difference frequency mixing in the xuv region,” J. Phys. B 29, L163–L168 (1996).

[CrossRef]

Ph. Antoine, B. Piraux, D. B. Milosevic, and M. Gadja, “Generation of ultrashort pulses of harmonics,” Phys. Rev. A 54, R1761–R1764 (1996).

[CrossRef]
[PubMed]

P. Antoine, B. Piraux, and A. Maquet, “Time profile of harmonics generated by a single atom in strong electromagnetic field,” Phys. Rev. A 51, R1750–R1753 (1995).

[CrossRef]

S. G. Preston and J. B. Watson, “Generation of harmonic quasi-continuum from beating laser fields,” J. Phys. B 31, 2247–2257 (1998).

[CrossRef]

M. Protopapas, A. Sanpera, P. L. Knight, and K. Burnett, “High intensity two color interactions in the tunneling and stabilization regimes,” Phys. Rev. A 52, R2527–R2530 (1995).

[CrossRef]

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]

S. C. Rae, K. Burnett, and J. Cooper, “Generation and propagation of high-order harmonics in a rapidly ionizing medium,” Phys. Rev. A 50, 3438–3446 (1994).

[CrossRef]
[PubMed]

K. Burnett, V. C. Reed, J. Cooper, and P. L. Knight, “Calculation of the background emitted during high-harmonic generation,” Phys. Rev. A 45, 3347–3349 (1992).

[CrossRef]
[PubMed]

H. Eichmann, S. Meyer, K. Riepl, C. Momma, and B. Wellegehausen, “Generation of short-pulse tunable xuv radiation by high-order frequency mixing,” Phys. Rev. A 50, R2834–R2836 (1994).

[CrossRef]
[PubMed]

M. Lewenstein, P. Salieres, and A. L’Huillier, “Phase of the atomic polarization in high-order harmonic generation,” Phys. Rev. A 52, 4747–4754 (1995).

[CrossRef]
[PubMed]

C. Figueira de Morisson Faria, M. Dörr, and W. Sandner, “Time profile of harmonic generation,” Phys. Rev. A 55, 3961–3963 (1997).

[CrossRef]

M. Protopapas, A. Sanpera, P. L. Knight, and K. Burnett, “High intensity two color interactions in the tunneling and stabilization regimes,” Phys. Rev. A 52, R2527–R2530 (1995).

[CrossRef]

K. J. Schafer and K. C. Kulander, “High harmonic generation from ultrafast pump lasers,” Phys. Rev. Lett. 78, 638–641 (1997).

[CrossRef]

M. B. Gaarde, P. Antoine, A. Persson, B. Carre, A. L’Huillier, and C. G. Wahlstrom, “High-order tunable sum and difference frequency mixing in the xuv region,” J. Phys. B 29, L163–L168 (1996).

[CrossRef]

S. G. Preston and J. B. Watson, “Generation of harmonic quasi-continuum from beating laser fields,” J. Phys. B 31, 2247–2257 (1998).

[CrossRef]

H. Eichmann, S. Meyer, K. Riepl, C. Momma, and B. Wellegehausen, “Generation of short-pulse tunable xuv radiation by high-order frequency mixing,” Phys. Rev. A 50, R2834–R2836 (1994).

[CrossRef]
[PubMed]

H. Eichmann, A. Egbert, S. Nolte, C. Momma, B. Welleghausen, W. Becker, S. Long, and J. K. McIver, “Polarization-dependent high-order two color mixing,” Phys. Rev. A 51, R3414–R3417 (1995).

[CrossRef]

M. B. Gaarde, P. Antoine, A. Persson, B. Carre, A. L’Huillier, and C. G. Wahlstrom, “High-order tunable sum and difference frequency mixing in the xuv region,” J. Phys. B 29, L163–L168 (1996).

[CrossRef]

E. Cormier and P. Lambropoulos, “Above-threshold ioniza- tion spectrum of hydrogen using b-spline functions,” J. Phys. B 30, 77–91 (1997).

[CrossRef]

E. Cormier and P. Lambropoulos, “Effect of strong dressing field on the polarizability of atomic helium at harmonic frequencies,” J. Phys. B 30, 3095–3106 (1997).

[CrossRef]

S. G. Preston and J. B. Watson, “Generation of harmonic quasi-continuum from beating laser fields,” J. Phys. B 31, 2247–2257 (1998).

[CrossRef]

M. Lewenstein, P. Balcou, M. Yu Ivanov, A. L’Huillier, and P. B. Corkum, “Theory of high harmonic generation by low-frequency laser fields,” Phys. Rev. A 49, 2117–2132 (1994).

[CrossRef]
[PubMed]

M. Lewenstein, P. Salieres, and A. L’Huillier, “Phase of the atomic polarization in high-order harmonic generation,” Phys. Rev. A 52, 4747–4754 (1995).

[CrossRef]
[PubMed]

C. Figueira de Morisson Faria, M. Dörr, and W. Sandner, “Time profile of harmonic generation,” Phys. Rev. A 55, 3961–3963 (1997).

[CrossRef]

K. Burnett, V. C. Reed, J. Cooper, and P. L. Knight, “Calculation of the background emitted during high-harmonic generation,” Phys. Rev. A 45, 3347–3349 (1992).

[CrossRef]
[PubMed]

Ph. Antoine, B. Piraux, D. B. Milosevic, and M. Gadja, “Generation of ultrashort pulses of harmonics,” Phys. Rev. A 54, R1761–R1764 (1996).

[CrossRef]
[PubMed]

P. Antoine, B. Piraux, and A. Maquet, “Time profile of harmonics generated by a single atom in strong electromagnetic field,” Phys. Rev. A 51, R1750–R1753 (1995).

[CrossRef]

S. C. Rae, K. Burnett, and J. Cooper, “Generation and propagation of high-order harmonics in a rapidly ionizing medium,” Phys. Rev. A 50, 3438–3446 (1994).

[CrossRef]
[PubMed]

H. Eichmann, S. Meyer, K. Riepl, C. Momma, and B. Wellegehausen, “Generation of short-pulse tunable xuv radiation by high-order frequency mixing,” Phys. Rev. A 50, R2834–R2836 (1994).

[CrossRef]
[PubMed]

H. Eichmann, A. Egbert, S. Nolte, C. Momma, B. Welleghausen, W. Becker, S. Long, and J. K. McIver, “Polarization-dependent high-order two color mixing,” Phys. Rev. A 51, R3414–R3417 (1995).

[CrossRef]

M. D. Perry and J. K. Crane, “High-order harmonic emission from mixed fields,” Phys. Rev. A 48, R4051–R4054 (1993).

[CrossRef]

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]

M. Protopapas, A. Sanpera, P. L. Knight, and K. Burnett, “High intensity two color interactions in the tunneling and stabilization regimes,” Phys. Rev. A 52, R2527–R2530 (1995).

[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]

K. J. Schafer and K. C. Kulander, “High harmonic generation from ultrafast pump lasers,” Phys. Rev. Lett. 78, 638–641 (1997).

[CrossRef]

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

[CrossRef]
[PubMed]

K. C. Kulander, K. J. Schafer, and J. L. Krause, “Dynamics of short-pulse excitation, ionization and harmonic conversion,” in Super Intense Laser-Atom Physics, B. Piraux, Anne L’Huillier, and Kazimierz Rzazewski, eds. (Plenum, New York, 1993), pp. 95–127.

C. de Boor, A Practical Guide to Splines (Springer-Verlag, New York, 1978).