Harmonic generation in an ionized gas medium with a 100-femtosecond, high repetition rate laser source at intermediate intensities

Year: 1997

Authors: De Lisio C., Altucci C., Bruzzese R., De Filippo F., Solimeno S., Bellini M., Foggi P.

Autors Affiliation: Dipartimento di Scienze Fisiche, Univ. di Napoli Federico II, Ist. Naz. di Fisica della Materia, Padiglione 20, Mostra d\’ Oltremare, 80125 – Napoli, Italy; Europ. Lab. Nonlinear Spectrosc., Largo E. Fermi, 2, 50125-Firenze, Italy

Abstract: We report the realization of a vacuum-ultraviolet radiation source based on high-order harmonic generation in noble-gas samples, operating at high repetition rate. In particular, we observed up to the 13th harmonic (? = 61 nm) of the fundamental frequency of a short pulse, high repetition rate titanium-sapphire laser after its interaction with a Xe gas jet. The effects of the propagation of the fundamental and harmonic beams through an ionized medium are studied by analysing the spectral profile of the 9th and 7th harmonics. Finally, we report a study of the dependence of the harmonic conversion efficiency on relative position of the focus and the gas target.

Journal/Review: APPLIED PHYSICS B-LASERS AND OPTICS

Volume: 64 (3)      Pages from: 323  to: 330

KeyWords: Light propagation; Natural frequencies; Solid state lasers; Ultraviolet radiation; Xenon, Repetition rate; Titanium sapphire laser, Harmonic generation
DOI: 10.1007/s003400050180

Citations: 10
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