Single-frequency YAG:Nd3+ laser with passive Q switching

A pulsed single-frequency YAG:Nd³⁺ crystal laser was constructed and investigated. Resonance reflectors were used in this laser as the resonator mirrors, whereas the other components were of conventional nature. Single-frequency operation was retained at 25% excess of the rate of pumping above the threshold. A calculation was made of the frequency dependence of the Q factor of the resonator.