Extension of Dual-Wavelength Region in Semiconductor Laser with Distributed Bragg Reflector

摘要

The operating region of dual-wavelength oscillation in a semiconductor laser with a double-peak distributed Bragg reflector is extended. By feeding back approximately 3.4% of the output power in the long-wavelength beam using an external cavity with a diffraction grating, the current width of dual-wavelength oscillation is extended from 1 mA (feedback OFF) to 13-18mA (feedback ON).