New nonlinear LiGa(SexS1-x)2crystal for frequency conversion of IR- lasers

Pavel P. Geiko

doi:10.1117/12.675865

21 April 2006 New nonlinear LiGa(Se_xS_1-x)₂ crystal for frequency conversion of IR- lasers

Pavel P. Geiko

Proceedings Volume 6160, Twelfth Joint International Symposium on Atmospheric and Ocean Optics/Atmospheric Physics; 616027 (2006) https://doi.org/10.1117/12.675865
Event: Twelfth Joint International Symposium on Atmospheric and Ocean Optics/Atmospheric Physics, 2005, Tomsk, Russian Federation

Abstract

Solid solutions with partial substitution of ligand ions are promising mediums for nonlinear optical applications. Biaxial LiGa(Se_xS_1-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 n_i (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(Se_xS_1-x)₂ crystals are attractive for frequency conversion of femtosecond Ti: sapphire laser because group-velocity- matching holds in direction of phase-matching also.

Citation Download Citation

Pavel P. Geiko "New nonlinear LiGa(Se_xS_1-x)₂ crystal for frequency conversion of IR- lasers", Proc. SPIE 6160, Twelfth Joint International Symposium on Atmospheric and Ocean Optics/Atmospheric Physics, 616027 (21 April 2006); https://doi.org/10.1117/12.675865

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