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Proceedings Paper

Fourth-harmonic generation of the CO2 laser wavelength at 10.5910 μm in BaGa4S7
Author(s): Kiyoshi Kato; Takayuki Okamoto; Takuya Mikami; Valentin Petrov; Valeriy Badikov; Dmitrii Badikov; Vladimir Panyutin
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Paper Abstract

This paper reports the 90° phase-matched fourth-harmonic generation of the CO2 laser wavelength at 10.5910 μm in BaGa4S7. The 1.4 cm long BaGa4S7 crystal used in the present experiment was cut at θ=9.2° in the xz(=bc) plane. The pump source was the second harmonic of the wave-guide CO2 laser (10.5910 μm) operating with an average output power of 18.3 W at 130 kHz. By focusing the 7.6 W, 5.2955 μm pulses (peak power is 6kW with 10 ns pulse duration) generated from the 2 cm long AgGa0.65In0.35Se2 crystal into the BaGa4S7 crystal (θPM=9.9°) with the 6 cm focal length ZnSe lens, the maximum average output power of 0.3 W was obtained at 2.6478 μm without any damage to the crystal. In addition, the new Sellmeier equations of BaGa4S7 are presented.

Paper Details

Date Published: 12 March 2013
PDF: 5 pages
Proc. SPIE 8604, Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications XII, 860416 (12 March 2013); doi: 10.1117/12.2002929
Show Author Affiliations
Kiyoshi Kato, Chitose Institute of Science and Technology (Japan)
Okamoto Optics Works, Inc. (Japan)
Takayuki Okamoto, Okamoto Optics Works, Inc. (Japan)
Takuya Mikami, Okamoto Optics Works, Inc. (Japan)
Valentin Petrov, Max-Born-Institute for Nonlinear Optics and Ultrafast Spectroscopy (Germany)
Valeriy Badikov, Kuban State Technological Univ. (Russian Federation)
Dmitrii Badikov, Kuban State Technological Univ. (Russian Federation)
Vladimir Panyutin, Max-Born-Institute for Nonlinear Optics and Ultrafast Spectroscopy (Germany)


Published in SPIE Proceedings Vol. 8604:
Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications XII
Konstantin L. Vodopyanov, Editor(s)

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