Journal of the European Optical Society - Rapid publications, Vol 3 (2008)

Short pulse, diode pumped, passively Q-switched Nd:YAG laser at 946 nm quadrupled for UV production

O. P. Kimmelma, I. Tittonen, S. C. Buchter


We report on a compact UV-laser with a short pulse length of 1.9 ns at 236 nm. A passively Q-switched quasi-three-level Nd:YAG laser at 946 nm acts as the pump source. UV pulses are produced by two consecutive single-pass frequency doubling events, the first one from IR to blue with a BIBO crystal and the second one from blue to deep-UV with a beta-BBO crystal. Conversion efficiency from 946 nm to 473 nm is 28% and from blue to UV 7%. Average power for UV is 7.6 mW with a energy and peak power of 230 nJ, and 120 W respectively.

© The Authors. All rights reserved. [DOI: 10.2971/jeos.2008.08008]

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Photon Systems,

S. Chadha, R. Manoharan, P. Moënne-Loccoz, W. H. Nelson, W. L. Peticolas, and J. F. Sperry, "Comparison of the UV resonanceRaman spectra of bacteria, bacterial cell walls, and ribosomes excited in the deep UV" Appl. Spectrosc. 47, 38-43 (1993).

O. Kimmelma, M. Kaivola, I. Tittonen, and S. C. Buchter,"Short pulse, high peak power, diode pumped, passively Q-switched 946 nm Nd:YAG laser" Opt. Commun. 273, 496-499 (2007).

S. Johansson, S. Bjurshagen, C. Canalias, V. Pasiskevicius, F. Laurell, and R. Koch, "An all solid-state UV source based on a frequency quadrupled, passively Q-switched 946 nm laser" Opt. Express 15, 449-458 (2007).

D. C. Gerstenberger, T. M. Trautmann, and M. S. Bowers, "Noncritically phase-matched second-harmonic generation in cesium lithium borate" Opt. Lett. 28, 1242-1244 (2003).

J. Zayhowski, and A. Wilson, Jr, "Pump-Induced Bleaching of the Saturable Absorber in Short-Pulse Nd:YAG/Cr4+:YAG Passively QSwitched Microchip Lasers" IEEE J. Quantum Elect. 39, 1588-1593 (2003).

X. Zhang, A. Brenier, J. Wang, and H. Zhang, "Absorption crosssection of Cr4+:YAG at 946 and 914 nm" Opt. Mater. 26, 293-296 (2004).

T. Freegarde, J. Coutts, J. Walz, D. Leibfried, and T.W. Hänsch, "General analysis of type I second-harmonic generation with elliptical Gaussian beams" J. Opt. Soc. Am. B-Opt. 14, 2010-2016 (1997).

J. J. Degnan"Effects of thermalization on Q-switched laser properties" IEEE J. Quantum. Elect. 34, 887-899 (1998).

S.P. Ng, D. Y. Tang, L. J. Qian, and L. J. Qin, "Satellite Pulse Generation in Diode-Pumped Passively Q-Switched Nd:GdVO4 Lasers" IEEE J. Quantum. Elect. 42, 625-632 (2006).