Output power and temperature dependence of the linewidth of single- frequency cw (GaAl)As diode lasers

Abstract

We report here the observation of a linear dependence of cw single-frequency (GaAl)As diode laser linewidth as a function of reciprocal output power at 77, 195, and 273 K. The observed data are explained in terms of spontaneous emission events and their related refractive index perturbations.