13 February 2008 Temperature tuned 90° phase-matched CO2 laser doubling in AgGa1-xInxS2 crystal
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Abstract
90° phase-matched type-I second harmonic generation (SHG) of CO2 laser radiation at 10.591μm is demonstrated at 203°C in mixed chalcopyrite AgGa1-xInxS2 crystal with x = 0.14 ± 0.01. In addition, temperature-tuned difference frequency generation (DFG) at 4.02μm is obtained by mixing the idler output of a Nd:YAG third harmonic pumped β-BBO optical parametric oscillator and its fundamental source at 1.0642μm. The Sellmeier and thermo-optic dispersion formulas that reproduce well these experimental results are presented.
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Saumyabrata Banerjee, Saumyabrata Banerjee, Kentaro Miyata, Kentaro Miyata, Kiyoshi Kato, Kiyoshi Kato, } "Temperature tuned 90° phase-matched CO2 laser doubling in AgGa1-xInxS2 crystal", Proc. SPIE 6875, Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications VII, 687517 (13 February 2008); doi: 10.1117/12.760564; https://doi.org/10.1117/12.760564
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