紧凑、被动调Q、全固态主振荡功率放大器 - 光参量振荡器（MOPA - OPO）系统，由光纤耦合二极管激光器泵浦，可产生高亮度、可调谐的紫外辐射。

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.

作者信息

Peuser Peter, Platz Willi, Fix Andreas, Ehret Gerhard, Meister Alexander, Haag Matthias, Zolichowski Paul

机构信息

EADS Innovation Works, IW-SI, P.O. Box 800465, 81663 München, Germany.

出版信息

Appl Opt. 2009 Jul 1;48(19):3839-45. doi: 10.1364/ao.48.003839.

DOI:10.1364/ao.48.003839

PMID:19571944

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.

摘要

我们报道了一种紧凑的、可调谐紫外激光系统，该系统由一个光学参量振荡器（OPO）和一个纵向二极管泵浦的Nd:YAG主振荡器 - 功率放大器（MOPA）组成。整个激光系统的泵浦能量通过单根传输光纤提供。纳秒脉冲由一个通过Cr(4+):YAG晶体被动调Q的振荡器产生。OPO由Nd:YAG MOPA的二次谐波泵浦。通过OPO腔内和频混频过程产生245 - 260 nm范围内具有高光束质量的连续可调谐辐射。实现了1.2 mJ的最大脉冲能量，相对于MOPA在1064 nm处的脉冲能量，其光学效率为3.75%。