Abstract
Abstract. The design and performance of an all-solid-state Nd:YVO 4 laser, transversely pumped by a single 20-W at 808 nm diode with nocoupling optics, are presented. The prototype, which is devised to be thesource of a micro-LIDAR station, is very simple, easy to align, compact,and stable. The key element is a roof prism as the end mirror of the lasercavity, which is used to symmetrize the effects of the thermal distortionand the inhomogeneity of the population inversion distribution. Typicalnumbers are 4.2-W cw with a slightly astigmatic 3:2 homogeneous spotand a divergence of 0.5 mrad. The protoype is also tested in the activeQ-switching mode, providing pulses 50-ns full width at half maximum FWHM at 14 KHz, 3.5 W average. Frequency doubling external to thecavity in a nonoptimized configuration provides 700 mW at 532 nm. © 2010 Society of Photo-Optical Instrumentation Engineers. DOI: 10.1117/1.3361670 Subject terms: diode-pumped solid-state lasers; thermal effects; high-powertransversal pumping; LIDAR
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