Optical Configurations Suitable For Reliable Single-Mode Operation Of Tunable Vibronic Low-Gain Lasers

We present a comparative experimental investigation of the performance of a number of different frequency selective optical configurations used for line-narrowing of low-gain, solid-state lasers operated in prelasing Q-switched regime. This study has been carried out by paying particular attention to relevant optical problems for the realization of reliable single-mode, tunable, spaceborne, vibronic lasers.