[OPTICAL REVIEW Vol. 7, No. 6 (2000) 573-575]

Single-Mode Operation of Broad-Area Diode Laser at 670 nm by External Cavity Configuration with a Diffraction Grating

Shunichi SATO,1 Rui TAKADA2 and Humio INABA2

1Institute for Advanced Materials Processing, Tohoku University, 2-1-1, Katahira, Aoba-ku, Sendai, 980-8577 Japan, 2Tohoku Institute of Technology, 35-1, Yagiyama-kasumi-cho, Taihaku-ku, Sendai, 982-8577 Japan

(Received November 4, 1999; Accepted June 28, 2000)

We demonstrate the single mode operation of a broad-area diode laser at 670 nm by means of an external cavity configuration using a diffraction grating. The output power of 150 mW is obtained with a spectral width of 40 MHz.

Key words : single mode, broad-area diode laser, external cavity, grating