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Stable polarization short pulse passively Q-switched monolithic microchip laser with [110] cut Cr4+:YAG

✍ Scribed by Y. Wang; M. Gong; P. Yan; L. Huang; D. Li

Publisher: John Wiley and Sons
Year: 2009
Tongue: English
Weight: 102 KB
Volume: 6
Category: Article
ISSN: 1612-2011
DOI: 10.1002/lapl.200910079

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✦ Synopsis

A monolithic Nd:YAG microchip laser with [110] cut Cr 4+ :YAG is presented. The output beam is linearly polarized with polarization ratio higher than 100:1. The polarization direction is stable, independent of pump power, crystal temperature, LD temperature. In single longitudinal mode operation, stable 259 ps pulses at 2.5 kHz with 82 kW peak power and diffraction limited beam mode are output. With a simple and compact one-pass Nd:YVO 4 amplifier, 144 kW peak power is achieved. Single longitudinal and fundamental transverse mode is kept after passing through the amplifier stage. The microchip laser can be operated in two longitudinal modes with two sets of output pulses by increasing the pump power.

Superposed pulse profile in single longitudinal mode at pump power of 6.48 W. Insert: single pulse profile

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