[OPTICAL REVIEW Vol. 1, No. 1 (1994) 88-90]

Frequency Doubling of a Laser Diode Using a Domain-Inverted LiTaO3 Waveguide with a Monolithic Bragg Reflector

Kazuhisa YAMAMOTO, Kiminori MIZUUCHI, Hisako HARA, Yasuo KITAOKA and Makoto KATO

Materials and Devices Laboratory, Matsushita Electric Industrial Co., Ltd., 3-1-1, Yagumo-nakamachi, Moriguchi, Osaka, 570 Japan

(Accepted August 15, 1994)

We report wavelength stabilization of a laser diode using a highly efficient distributed Bragg reflector (DBR) grating formed on a LiTaO3 quasi-phase-matched second harmonic generation (QPM-SHG) device. Fabricating the second-order DBR on the LiTaO3 waveguide, the reflectivity of 90% and FWHM wavelength bandwidth of 0.2 nm were obtained. By stabilizing the oscillation wavelength of the laser diode, 3.1 mW of blue light was generated in the QPM-SHG device with the monolithic grating.

Key words : frequency doubling, waveguide, LiTaO3, quasi-phase-matching, wavelength stabilization