Coupling of radiation out of a single-frequency GaAlAs/GaAs laser with an external dispersive resonator

A study was made of the operation of a semiconductor laser with an external dispersive resonator 15 mm long. An output power of 40.5 mW was reached for single-frequency emission from a semitransparent mirror placed inside the resonator. Single-frequency emission was retained throughout the investigated range of powers from the threshold value to the maximum.