GaAs-Ga1−xAlxAs double-heterostructure distributed feedback diode lasers

Lasing characteristics of GaAs-Ga_1-xAl_xAs double-heterostructure distributed feedback diode lasers are investigated at 80-100 K under electrical pumping. The main subjects studied here are the spectrum and mode of the distributed feedback laser and its temperature characteristics. Single longitudinal mode oscillation is observed at wavelengths which are determined by the corrugation period. The temperature dependence of the wavelength is about 1/3 that of the cleaved Fabry-Perot laser made from the same wafer.