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12 March 2024 Second-harmonic generation of a CO2 laser at 10.7186–9.2714 μm in AgGa1-xInxSe2
Kiyoshi Kato, Valentin Petrov, Kentaro Miyata
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Proceedings Volume 12869, Nonlinear Frequency Generation and Conversion: Materials and Devices XXIII; 128690E (2024) https://doi.org/10.1117/12.3002640
Event: SPIE LASE, 2024, San Francisco, California, United States
Abstract
We review the phase-matching properties of AgGa1–xInxSe2 for second-harmonic generation of a CO2 laser at 10.7186–9.2714 μm. The refined Sellmeier equations for AgInSe2 coupled with our previously published Sellmeier equations for AgGaSe2 are found to reproduce well the critical phase-matching conditions at 10.5910–9.2820 μm thus far published in the literature. In addition, these Sellmeier equations are used to clarify the reason for the discrepancy between the measured and calculated 90° phase-matching conditions at 10.6964–9.2714 μm.
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(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.
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Kiyoshi Kato, Valentin Petrov, and Kentaro Miyata "Second-harmonic generation of a CO2 laser at 10.7186–9.2714 μm in AgGa1-xInxSe2", Proc. SPIE 12869, Nonlinear Frequency Generation and Conversion: Materials and Devices XXIII, 128690E (12 March 2024); https://doi.org/10.1117/12.3002640
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KEYWORDS
Second harmonic generation
Carbon dioxide lasers
Chalcopyrites
Nonlinear optical materials
Phase matching
Refractive index
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