✦ LIBER ✦

Low heat and high efficiency Nd:GdVO4 laser pumped by 913 nm

✍ Scribed by J.L. Ma; B. Xiong; L. Guo; P.F. Zhao; L. Zhang; X.C. Lin; J.M. Li; Q.D. Duanmu

Publisher: John Wiley and Sons
Year: 2010
Tongue: English
Weight: 166 KB
Volume: 7
Category: Article
ISSN: 1612-2011
DOI: 10.1002/lapl.201010036

No coin nor oath required. For personal study only.

✦ Synopsis

A Nd:GdVO 4 crystal is pumped directly into its emitting level at 913 nm for the first time to the best of our knowledge. 3.35 W output laser emitting at 1063 nm is achieved in a 1.1 at.% Nd-doped Nd:GdVO 4 . The crystal absorbs pumping light of 4.30 W at 913 nm and produces a very low quantity of heat with the opto-optic conversion efficiency of 77.2%. The average slope efficiency is 81.2% from 0.21 W, at the threshold, to 4.30 W of absorbed pump power. Because of the very weakly thermal effect, the near-diffraction-limit beam is easily obtained with beam quality factor of M 2 ≈ 1.1. Output power, W 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0 Crystal temperature, °C

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