1 August 2002 Difference frequency mixing of periodically poled lithium niobate optical parametric oscillator output waves in GaSe crystal
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Optical Engineering, 41(8), (2002). doi:10.1117/1.1488606
Abstract
We report on an optical parametric oscillator (OPO) based on periodically poled lithium niobate (PPLN) pumped by a Nd:YAG laser, and on extending its tuning range by difference-frequency mixing of OPO output waves in GaSe crystal. Maximum combined signal and idler pulse energy of 2.7 mJ and slope efficiency of 25% have been achieved. The tuning range is 1.71 to 1.98 ?m for the signal wave and 2.81 to 2.30 ?m for the idler wave, using a single set of mirrors. As an application of this PPLN OPO, the signal and the idler waves are difference-frequency- mixed in a GaSe crystal to produce tunable mid-IR from 4.35 to 14.25 ?m. The efficiency of the mixing has been analyzed, considering the experimental results.
S. Haidar, Y. K. Hsu, Chen Shiung Chang, S. C. Wang, Hiromasa Ito, "Difference frequency mixing of periodically poled lithium niobate optical parametric oscillator output waves in GaSe crystal," Optical Engineering 41(8), (1 August 2002). https://doi.org/10.1117/1.1488606
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