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Proceedings Paper

Nonlinear optical device for middle infrared generation
Author(s): Navin B. Patel
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Paper Abstract

An alternative to Quasi Phase Matching (QPM), called Semi Quasi Phase Matching (SQPM) is proposed, wherein the segments of crystals with inverted axis are substituted by segments of small polycrystal grains of the same material. These segments produce negligible nonlinear interaction, while still providing the π phase change necessary. A SQPM device of length L should produce the same nonlinear output as a QPM device of length L/2. Crystals with higher nonlinear coefficients and larger transparency ranges like III-V and II-VI compounds, not normally amenable to inversion of axes, can be used. This is especially important for doubling of CO2 laser lines.

Paper Details

Date Published: 14 April 2008
PDF: 10 pages
Proc. SPIE 6952, Laser Source Technology for Defense and Security IV, 69520T (14 April 2008); doi: 10.1117/12.777724
Show Author Affiliations
Navin B. Patel, Univ. of Campinas (Brazil)

Published in SPIE Proceedings Vol. 6952:
Laser Source Technology for Defense and Security IV
Mark Dubinskii; Gary L. Wood, Editor(s)

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