Second-harmonic and sum-frequency generation in KTiOAsO/sub 4/

Tungstate flux-grown KTiOAsO/sub 4/ (KTA) has been found to be phase matchable for type-2 SHG and SFG down to 0.5174 and 0.4193 /spl mu/m at 20.0/spl deg/C. Sellmeier's equations and nonlinear optical constants of this crystal are reported.<
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