Dynamical behaviour and harmonic generation of a 946-nm pulsed, flashlamp-pumped Nd: YAG laser

摘要

The dynamical behaviour of aQ-switched, flashlamp-pumped Nd: YAG laser cooled to 253 K was investigated. The build-up time of photons in the resonator at 946 nm was 20 times longer than for 1064 nm generation in aQ-mode of operation. A type I second- and fourth-harmonic generation was obtained in KDP and BBO nonlinear optical crystals. A reproducible spectral line width of the second-harmonic generation δν=2.6 GHz within a tuning range of Δν=146 GHz was achieved. A comparison between experimental and theoretical results is presen