Title

Calculation of high-order harmonic generation by ultrashort laser pulses

Document Type

Article

Publication Date

1-1-1996

Abstract

With current technology, high-intensity lasers can be designed to have pulse widths of 50-100 fs and two groups have now amplified 20-30 fs pulses. This paper presents calculations of single atom harmonic generation spectra from neon and argon atoms in 800-nm fields with pulse durations of 20-100 fs. The rapidly rising and falling intensity profile of the ultrashort pulse modifies both the envelope and phase of the emitted harmonic spectrum, broadening and shifting the harmonic line. Combined with rapid ionization at higher intensities, this pulse envelope effect can lead to asymmetric shifts of the harmonic frequencies (most often blue shifts), which are purely a single atom effect.

Publication Source (Journal or Book title)

Conference Proceedings - Lasers and Electro-Optics Society Annual Meeting-LEOS

First Page

113

Last Page

114

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