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Proceedings Paper

Diode-pumped microchip Nd3+Cr4+:YAG laser and its frequency-doubling operation
Author(s): Xiaobo Chen; Lin Wang; Guowen Wang; Zhiguo Zhang; Jane G. Zhu; Z. Charles Ying
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Paper Abstract

A diode-pumped microchip laser is developed and achieves self Q-switched operation, which produces nanosecond pulses at a wavelength of 946 nm. The laser medium is a crystal of yttrium aluminum garnet (YAG) doped with both neodymium and chromium. The two surfaces of the NdCr:YAG crystal are coated with dielectric layers, which serve as the mirrors of the laser cavity. The Nd3+ ions in the NdCr:YAG crystal function as the gain medium while the Cr4+ ions act as a saturable absorber. The presence of the saturable absorber leads to self Q-switching, which produces laser pulses of 3.7-ns duration and 946-nm wavelength at a peak power of 240 W. When the laser output is focused onto a KNbO3 crystal, nanosecond pulses of blue color at 473 nm are obtained. The blue laser output has a single frequency and TEM00 transverse mode at a peak power of approximately 18 W.

Paper Details

Date Published: 13 March 2002
PDF: 8 pages
Proc. SPIE 4630, Solid State Lasers XI, (13 March 2002); doi: 10.1117/12.459005
Show Author Affiliations
Xiaobo Chen, Beijing Normal Univ. and New Mexico State Univ. (China)
Lin Wang, Bejing Normal Univ. and Institute of Physics (China)
Guowen Wang, Peking Univ. (China)
Zhiguo Zhang, Institute of Physics (China)
Jane G. Zhu, New Mexico State Univ. (United States)
Z. Charles Ying, New Mexico State Univ. (United States)

Published in SPIE Proceedings Vol. 4630:
Solid State Lasers XI
Richard Scheps, Editor(s)

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