200-mW-average power ultraviolet generation at 0.193 microm in K2Al2B2O7

Nobuhiro Umemura; Miwako Ando; Kaori Suzuki; Eiko Takaoka; Kiyoshi Kato; Zhang-Gui Hu; Masashi Yoshimura; Yusuke Mori; Takatomo Sasaki

doi:10.1364/ao.42.002716

200-mW-average power ultraviolet generation at 0.193 microm in K2Al2B2O7

Appl Opt. 2003 May 20;42(15):2716-9. doi: 10.1364/ao.42.002716.

Authors

Nobuhiro Umemura¹, Miwako Ando, Kaori Suzuki, Eiko Takaoka, Kiyoshi Kato, Zhang-Gui Hu, Masashi Yoshimura, Yusuke Mori, Takatomo Sasaki

Affiliation

¹ Faculty of Photonics Science, Chitose Institute of Science and Technology, 758-65 Bibi, Chitose, Hokkaido, Japan.

PMID: 12777008
DOI: 10.1364/ao.42.002716

Abstract

K2Al2B2O7 has been found to be phase matchable for type-1 sum-frequency generation (SFG) at 0.193 microm by mixing the Nd:YAG laser wavelength at 1.0642 microm and the SFG output of the RbTiOAsO4 optical parametric oscillator tuned at 0.2358 microm. An average power of 200 mW at 10 kHz was obtained in a 7-mm-long crystal. In addition, the Sellmeier equations and the thermo-optic dispersion formula, which predict well the phase-matching conditions and temperature phase-matching bandwidths (FWHM) for second-harmonic generation and SFG in the 0.193-0.669-microm range, are presented.