Abstract

We experimentally demonstrate the generation of an extreme-ultraviolet (XUV) supercontinuum in argon with a two-color laser field consisting of an intense 7fs pulse at 800nm and a relatively weak 37fs pulse at 400nm. By controlling the relative time delay between the two laser pulses, we observe enhanced high-order harmonic generation as well as spectral broadening of the supercontinuum. A method to produce isolated attosecond pulses with variable width and intensity is proposed.

© 2008 Optical Society of America

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    [CrossRef] [PubMed]
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    [CrossRef] [PubMed]

2007

Z. Zeng, Y. Cheng, X. Song, R. Li, and Z. Xu, Phys. Rev. Lett. 98, 203901 (2007).
[CrossRef] [PubMed]

2006

I. J. Sola, E. Mével, L. Elouga, E. Constant, V. Strelkov, L. Poletto, P. Villoresi, E. Benedetti, J. P. Caumes, S. Stagira, C. Vozzi, G. Sansone, and M. Nisoli, Nat. Phys. 2, 319 (2006).
[CrossRef]

T. Pfeifer, L. Gallmann, M. J. Abel, P. M. Nagel, D. M. Neumark, and S. R. Leone, Phys. Rev. Lett. 97, 163901 (2006).
[CrossRef] [PubMed]

T. Pfeifer, L. Gallmann, M. J. Abel, D. M. Neumark, and S. R. Leone, Opt. Lett. 31, 975 (2006).
[CrossRef] [PubMed]

Y. Oishi, M. Kaku, A. Suda, F. Kannari, and K. Midorikawa, Opt. Express 14, 7230 (2006).
[CrossRef] [PubMed]

2005

R. López-Martens, K. Varjú, P. Johnsson, J. Mauritsson, Y. Mairesse, P. Salières, M. B. Gaarde, K. J. Schafer, A. Persson, S. Svanberg, C. G. Wahlström, and A. L'Huillier, Phys. Rev. Lett. 94, 033001 (2005).
[CrossRef] [PubMed]

2004

Z. Chang, Phys. Rev. A 70, 043802 (2004).
[CrossRef]

2003

A. Baltuska, T. Udem, M. Uiberacker, M. Hentschel, E. Goulielmakis, C. Gohle, R. Holzwarth, V. S. Yakovlev, A. Scrinzi, T. W. Hänsch, and F. Krausz, Appl. Phys. B 421, 611 (2003).

2002

M. Drescher, M. Hentschel, R. Kienberger, M. Uiberacker, V. Yakovlev, A. Scrinzi, Th. Westerwalbesloh, U. Kleineberg, U. Heinzmann, and F. Krausz, Nature 419, 803 (2002).
[CrossRef] [PubMed]

1998

C. Altucci, C. Delfin, L. Roos, M. B. Gaarde, A. L'Huillier, I. Mercer, T. Starczewski, and C. G. Wahlström, Phys. Rev. A 58, 3934 (1998).
[CrossRef]

Appl. Phys. B

A. Baltuska, T. Udem, M. Uiberacker, M. Hentschel, E. Goulielmakis, C. Gohle, R. Holzwarth, V. S. Yakovlev, A. Scrinzi, T. W. Hänsch, and F. Krausz, Appl. Phys. B 421, 611 (2003).

Nat. Phys.

I. J. Sola, E. Mével, L. Elouga, E. Constant, V. Strelkov, L. Poletto, P. Villoresi, E. Benedetti, J. P. Caumes, S. Stagira, C. Vozzi, G. Sansone, and M. Nisoli, Nat. Phys. 2, 319 (2006).
[CrossRef]

Nature

M. Drescher, M. Hentschel, R. Kienberger, M. Uiberacker, V. Yakovlev, A. Scrinzi, Th. Westerwalbesloh, U. Kleineberg, U. Heinzmann, and F. Krausz, Nature 419, 803 (2002).
[CrossRef] [PubMed]

Opt. Express

Opt. Lett.

Phys. Rev. A

C. Altucci, C. Delfin, L. Roos, M. B. Gaarde, A. L'Huillier, I. Mercer, T. Starczewski, and C. G. Wahlström, Phys. Rev. A 58, 3934 (1998).
[CrossRef]

Z. Chang, Phys. Rev. A 70, 043802 (2004).
[CrossRef]

Phys. Rev. Lett.

T. Pfeifer, L. Gallmann, M. J. Abel, P. M. Nagel, D. M. Neumark, and S. R. Leone, Phys. Rev. Lett. 97, 163901 (2006).
[CrossRef] [PubMed]

Z. Zeng, Y. Cheng, X. Song, R. Li, and Z. Xu, Phys. Rev. Lett. 98, 203901 (2007).
[CrossRef] [PubMed]

R. López-Martens, K. Varjú, P. Johnsson, J. Mauritsson, Y. Mairesse, P. Salières, M. B. Gaarde, K. J. Schafer, A. Persson, S. Svanberg, C. G. Wahlström, and A. L'Huillier, Phys. Rev. Lett. 94, 033001 (2005).
[CrossRef] [PubMed]

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Figures (3)

Fig. 1
Fig. 1

Experimental (a) and calculated (b) high-order harmonic spectra driven with a one-color 7 fs laser pulse (blue dashed–dotted curve), two color pulses with zero time delay (green dashed curve), and with optimized time delay (red solid curve) between the two pulses.

Fig. 2
Fig. 2

Experimental (a) and calculated (b) high-order harmonic spectra obtained with two different time delays between the two color pulses, which are optimized for the bandwidth (blue dashed curve) and the intensity (red solid curve) of supercontinua at the cutoff region, respectively.

Fig. 3
Fig. 3

Calculated two-color-field driven harmonic features at the cutoff region in (a) the frequency domain and (b) the time domain, as a function of the relative time delay between the fundamental and SH fields. The relative time delay is defined as Δ τ T , where Δ τ is the time delay between the two fields and T = 2.67 fs is the fundamental field period.

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