✦ LIBER ✦

High efficiency, single-frequency continuous wave Nd:YVO4/YVO4 ring laser

✍ Scribed by J.Q. Zhao; Y.Z. Wang; B.Q. Yao; Y.L. Ju

Publisher: John Wiley and Sons
Year: 2010
Tongue: English
Weight: 123 KB
Volume: 7
Category: Article
ISSN: 1612-2011
DOI: 10.1002/lapl.200910128

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✦ Synopsis

An efficient single-frequency laser-diode pumped, continuous wave (CW) ring Nd laser emitting at 1064.4 nm is demonstrated. A composite crystal (Nd:YVO 4 /YVO 4 ) with undoped ends is single end pumped by a fiber-coupled laser diode (LD) at 808 nm. A four-mirror ring cavity is deigned to keep the laser unidirectional operating, which eliminate spatial hole burning in standing-wave cavity. With the incident pump power of 31.5 W, the obtained output power is 13.6 W, with a slope efficiency of 52.6% and an optical efficiency of 43.2%. At the same time, a beam quality of M 2 ∼ 1.1 is found. Beam radius, mm 0.5 0.4 0.3 0.2 0.1 0 0.6 0.7 0.

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