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Proceedings Paper

Sum-frequency generation of continuous-wave tunable ultraviolet coherent light in BBO-installed external cavity
Author(s): Kenta Mukoyama; Kazuhiro Tokuyama; Hiroshi Kumagai; Norihiro Inoue; Naoaki Fukuda; Toshio Takiya
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Paper Abstract

Recently, we have tried to develop a continuous wave (CW), tunable, and ultraviolet (UV) coherent light source through sum-frequency generation (SFG) using a BBO nonlinear crystal with a two-stage frequency-conversion system using two different external cavities for the enhancement of CW lights. In the first stage, we obtained the 532-nm light with the second harmonic generation (SHG) of the 1064-nm light. A bow-tie external cavity incorporating four mirrors, whose cavity length was controlled by the frequency stabilization method proposed by Hänsch and Couillaud, was employed there. In the second stage, to generate the 312-nm light, we demonstrated doubly resonant sum frequency generation of the 532-nm light from the first-stage and the 754-nm light from a single-frequency CW Ti:Sapphire laser. Considering a nonlinear coefficient, it should be preferable to use a BiBO crystal for high-efficient SFG, but the 312-nm light might be absorbed by the BiBO crystal. Therefore, we chose a BBO as a nonlinear crystal to avoid the absorption of the 312-nm light.

Paper Details

Date Published: 15 February 2012
PDF: 6 pages
Proc. SPIE 8240, Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications XI, 82401J (15 February 2012); doi: 10.1117/12.907849
Show Author Affiliations
Kenta Mukoyama, Osaka City Univ. (Japan)
Kazuhiro Tokuyama, Osaka City Univ. (Japan)
Hiroshi Kumagai, Osaka City Univ. (Japan)
Norihiro Inoue, Hitachi Zosen Corp. (Japan)
Naoaki Fukuda, Hitachi Zosen Corp. (Japan)
Toshio Takiya, Hitachi Zosen Corp. (Japan)

Published in SPIE Proceedings Vol. 8240:
Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications XI
Konstantin L. Vodopyanov, Editor(s)

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