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Proceedings Paper

New nonlinear LiGa(SexS1-x)2 crystal for frequency conversion of IR- lasers
Author(s): Pavel P. Geiko
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Paper Abstract

Solid solutions with partial substitution of ligand ions are promising mediums for nonlinear optical applications. Biaxial LiGa(SexS1-x)2 (O less than or equal to xl) crystals are characterized by extremely wide transparency range, (0.32 - 13.2) μm, relatively high nonlinear coefficients (5. 1-1 8.2 pm/V) and are promising for effective nonlinear optical interactions in visible -mid IR range. The dispersion of the refractive indices ni (i = x,y,z) has been investigated, the Sellmeier equations have been defined also. Tuning curves of optical parametric oscillator pumped by Nd:YAG-laser cover longer wavelength part of crystal transparency spectrum without interruption. The acceptable composition ratio of two parent crystals in a mixed nonlinear crystal has been developed for second harmonic and optical parametric generations. Sometimes by changing mixing ratio x it is possible to realized near noncritical phase-matching. LiGa(SexS1-x)2 crystals are attractive for frequency conversion of femtosecond Ti: sapphire laser because group-velocity- matching holds in direction of phase-matching also.

Paper Details

Date Published: 21 April 2006
PDF: 6 pages
Proc. SPIE 6160, Twelfth Joint International Symposium on Atmospheric and Ocean Optics/Atmospheric Physics, 616027 (21 April 2006); doi: 10.1117/12.675865
Show Author Affiliations
Pavel P. Geiko, Institute of Monitoring of Climatic and Ecological Systems (Russia)

Published in SPIE Proceedings Vol. 6160:
Twelfth Joint International Symposium on Atmospheric and Ocean Optics/Atmospheric Physics
Gelii A. Zherebtsov; Gennadii G. Matvienko, Editor(s)

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