Time-dependent studies of high-order harmonic generation (Invited Paper)

Kenneth J. Schafer; Jeffrey L. Krause; Kenneth C. Kulander; A. L'Huillier

doi:10.1117/12.134822

5 February 1992 Time-dependent studies of high-order harmonic generation (Invited Paper)

Kenneth J. Schafer, Jeffrey L. Krause, Kenneth C. Kulander, A. L'Huillier

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Proceedings Volume 1551, Ultrashort Wavelength Lasers; (1992) https://doi.org/10.1117/12.134822
Event: San Diego, '91, 1991, San Diego, CA, United States

Abstract

Experimental results have demonstrated very high order harmonic generation in rare gases exposed to intense laser fields. We use time-dependent methods to calculate the single atom emission spectrum in a number of systems. These spectra show many of the same features seen experimentally, e.g. a broad plateau that depends in intensity and extent on the ionization potential. To explain the observed spectra, we fold these single atom results into a full solution of the propagation equations for the nonlinear medium. This leads to impressive agreement between theory and the experiment for xenon, both in the absolute number of photons observed as well as the intensity dependence of all harmonics through the 21st. The use of time-dependent methods also facilitates a comparison between photon and electron emission processes.

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Kenneth J. Schafer, Jeffrey L. Krause, Kenneth C. Kulander, and A. L'Huillier "Time-dependent studies of high-order harmonic generation (Invited Paper)", Proc. SPIE 1551, Ultrashort Wavelength Lasers, (5 February 1992); https://doi.org/10.1117/12.134822

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KEYWORDS

Chemical species

Photons

Harmonic generation

Xenon

Pulsed laser operation

Ionization

Phase matching

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