Amplified Luminescence and Parasitic Laser Modes in the Active Medium of a Transverse Diode-Pumped Nd:YAG Laser

Stabilization of a single-frequency generation of the injection-seeded pulsed solid-state laser

“…In the active Q−switched regime, the master oscillator−amplifier system is used. Two methods for implementing the master oscillator−amplifier system are possible: injection of single−frequency continuous radiation into the pulsed laser cavity [10,11] and amplification of the continuous laser radiation in a series of quantum amplifiers [3,4]. As a master oscillator of the laser system described here, a 20 mW single−frequency semiconductor laser was used.…”

“…This regime may be realized only when the semiconductor laser frequency gets into one of the transverse modes of the pulsed laser cavity. As a rule, the task of coupling the master oscillator and pulsed laser modes is not considered [11], though just this task is determinative in the problem of using such a laser system as a stable source of high−power single−frequency radiation.…”