title: Compact, passively Q-switched, all-solid-state master oscillator-power amplifier-optical parametric oscillator (MOPA-OPO) system pumped by a fiber-coupled diode laser generating high-brightness, tunable, ultraviolet radiation.
abstract: We report on a compact, tunable ultraviolet laser system that consists of an optical parametric oscillator (OPO) and a longitudinally diode-pumped Nd:YAG master oscillator-power amplifier (MOPA). The pump energy for the whole laser system is supplied via a single delivery fiber. Nanosecond pulses are produced by an oscillator that is passively Q-switched by a Cr(4+):YAG crystal. The OPO is pumped by the second harmonic of the Nd:YAG MOPA. Continuously tunable radiation is generated by an intracavity sum-frequency mixing process within the OPO in the range of 245-260 nm with high beam quality. Maximum pulse energies of 1.2 mJ were achieved, which correspond to an optical efficiency of 3.75%, relating to the pulse energy of the MOPA at 1064 nm.
authors: EADS Innovation Works, IW-SI, P.O. Box 800465, 81663 München, Germany. peter.peuser@eads.net
authors: Peter
authors: P
authors: Peuser
authors: Willi
authors: W
authors: Platz
authors: Andreas
authors: A
authors: Fix
authors: Gerhard
authors: G
authors: Ehret
authors: Alexander
authors: A
authors: Meister
authors: Matthias
authors: M
authors: Haag
authors: Paul
authors: P
authors: Zolichowski
mesh_terms: D053844:Lasers, Solid-State; D055096:Optical Devices; D055620:Optical Phenomena; D014466:Ultraviolet Rays