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We report difference frequency generation and temperature-tuned phase-matching in the nonlinear optical material periodically poled KTiOPO4 (PPKTP). We generated 12W of radiation tunable around 1.6m by difference-frequency mixing of the outputs of afrequency-doubled Nd:YLF laser at 523nm (240mW) and atunable Ti:sapphire laser near 760nm (340mW). Atemperature tuning rate of 0.73nm/C for the generated...
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