Abstract
Temperature tuning of CdSe optical parametric oscillators (OPO’s) is studied by pumping with the 1.8645-µm signal and 2.4793-µm idler outputs of a Nd:YAG laser-pumped CsTiOAsO4 (CTA) OPO. The measured temperature-dependent phase-matching conditions are used to construct new Sellmeier and thermo-optic dispersion formulas for CdSe, which are verified via temperature-tuned sum-frequency generation (SFG) between the fundamental and second harmonic of a transversely excited atmospheric (TEA) CO2 laser operating at 10.2466, 9.5525, and 9.2714 µm.
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