Abstract
We achieved improvement in conversion efficiency in a first-order quasi-phase-matched second-harmonic generation device that uses a LiTaO3 waveguide by experimentally characterizing the device process and the performances. Efficient overlaps among propagation light modes and the first-order periodically domain-inverted region are gained in a strongly confined waveguide fabricated by use of proton exchange annealed by a quick heat treatment. A blue-light power of 22 mW is obtained for a conversion efficiency of 18% by using a Ti:Al2O3 laser. The observed FWHM temperature and wavelength acceptance bandwidths for second-harmonic generation power are 2.5 °C and 0.13 nm, respectively. Using this device with antireflection coating on the input and output facets of the waveguide, we generate 1.3 mW of blue light for a conversion efficiency of 4% by direct diode-laser doubling.
© 1994 Optical Society of America
Full Article | PDF ArticleMore Like This
Kiminori Mizuuchi, Hiroyuki Ohta, Kazuhisa Yamamoto, and Makoto Kato
Opt. Lett. 22(16) 1217-1219 (1997)
E. U. Rafailov, P. Loza-Alvarez, C. T. A. Brown, W. Sibbett, R. M. De La Rue, P. Millar, D. A. Yanson, J. S. Roberts, and P. A. Houston
Opt. Lett. 26(24) 1984-1986 (2001)
Kiminori Mizuuchi, Tomoya Sugita, Kazuhisa Yamamoto, Tatsuo Kawaguchi, Takeshi Yoshino, and Minoru Imaeda
Opt. Lett. 28(15) 1344-1346 (2003)