Third-harmonic generation in positively dispersive gases with a novel cell

Year: 1994

Authors: Eramo R., Matera M.

Autors Affiliation: Dipartimento di Fisica, Universita’ di Firenze, and European Laboratory for Nonlinear Spectroscopy, Largo Enrico Fermi 2, I-50125, Firenze, Italy;
Istituto di Elettronica Quantistica, Consiglio Nazionale delle Ricerche,Via Panciatichi 56/30, I-50127 Firenze, Italy

Abstract: The generation of UV third-harmonic radiation by a focused laser beam in a positively dispersive gaseous medium is investigated. The nonlinear gas is confined to a focal half-space by using a differentially pumped gas cell. The resulting density gradient along the beam axis is shown to provide an efficient frequency conversion in spectral regions ofpositive dispersion. Experimental results obtained in argon at 197nm, which compare favorably with theory, are presented.

Journal/Review: APPLIED OPTICS (2004)

Volume: 33 (9)      Pages from: 1691  to: 1696

KeyWords: Argon; Gases; Laser beams; Laser optics; Mathematical models; Theory, Density gradient; Frequency conversion; Positively dispersive gases; Third harmonic generation, Nonlinear optics
DOI: 10.1364/AO.33.001691

Citations: 11
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