Abstract
The CO2 laser radiation at 10.5910–9.2714 μm was up-converted to the visible in the 90° phase-matched AgGa0.86In0.14S2 crystal by mixing with the output of the 0.3547 μm pumped BBO optical parametric oscillator at 25–120 °C. The new Sellmeier and thermo-optic dispersion formulas that reproduce these experimental results correctly as well as the previously published data [Banerjee et al. in Appl Phys B 87:101, (2007); Opt Commun 227:202 (2007)] for difference-frequency generation at 4.05–6.98 μm and second-harmonic generation at 5.2955 μm are presented.
Highlights
For the temperature-dependent phase-matching conditions for this process
In previous publications [1, 2], we have reported the Sellmeier and thermo-optic dispersion formulas for AgGa0.86In0.14S2 that provide a good reproduction for difference-frequency generation (DFG) at 4.05–6.98 lm and second-harmonic generation (SHG) at 5.2955 lm
A somewhat large discrepancy between theory and experiment was encountered for the 90° phase-matched upconversion of the CO2 laser radiation achieved in this crystal
Summary
For the temperature-dependent phase-matching conditions for this process. we have corrected these formulas so as to satisfy the new experimental results, and simultaneously fit the data points presented in [1, 2]. We report the new experimental results on the 90° phase-matched up-conversion of the CO2 laser radiation in AgGa0.86In0.14S2 and the new Sellmeier and thermo-optic dispersion formulas for this crystal.
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