Nobuhiro Umemura, Miwako Ando, Kaori Suzuki, Eiko Takaoka, Kiyoshi Kato, Zhang-Gui Hu, Masashi Yoshimura, Yusuke Mori, Takatomo Sasaki
Applied Optics, 42(15) 2716-2719, May 20, 2003 Peer-reviewed
K2Al2B2O7has been found to be phase matchable for type-1 sum-frequency generation (SFG) at 0.193 μm by mixing the Nd:YAG laser wavelength at 1.0642μm and the SFG output of the RbTiOAsO4optical parametric oscillator tuned at 0.2358 μm. 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–μm range, are presented. © 2003 Optical Society of America.