We present refined Sellmeier equations for that provide good reproduction of the phase-matching angles for frequency upconversion of laser radiation in the 1.7652-10.5910 µm range and for frequency downconversion in the 1.85-18 µm range thus far reported in the literature.
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| http://dx.doi.org/10.1364/AO.401828 | DOI Listing |
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We revisit the 90° phase-matching conditions for second-harmonic, sum-frequency, and difference-frequency generation in thus far reported in the literature. We present refined Sellmeier equations coupled with an updated thermo-optic dispersion formula to correctly reproduce the experimental results for noncritical three-wave interactions obtained in the 0.565-10.
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View Article and Find Full Text PDFWe present refined Sellmeier equations for that provide good reproduction of the phase-matching angles for frequency upconversion of laser radiation in the 1.7652-10.5910 µm range and for frequency downconversion in the 1.
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