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Proceedings Paper

Highly efficient CW Tm,Ho:GdVO4 laser pumped by a diode
Author(s): Baoquan Yao; Wanjun He; Xingbao Zhang; Yuezhu Wang
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Paper Abstract

In this paper, we report a high efficient and high power continuous wave diode-pumped cryogenic Tm(5% at.), Ho(0.5% at.):GdVO4 laser. One pumping source of Tm,Ho:GdVO4 laser is a fiber-coupled laser diode with fiber core diameter of 0.4 mm and numerical aperture (N. A.) of 0.3, supplying 14.8 W power at 793.6 nm. Another fiber-coupled LD radiation wavelength is centered at 805 nm with 0.22 N.A. and the same core diameter delivering power of greater than 30 W. For input pump power of 13.6 W at 794.2nm, the maximum output power of 4.2W, optical-to-optical conversion efficiency of 31% and slope efficiency 38% have been attained at 2.048 μm. The maximum cw power of 7.9-W is achieved by 805 nm LD under power of 26 W, corresponding to 40% optical-optical conversion efficiency relative to absorbed pumping power, which is close to quantum limited efficiency of 2 μm laser.

Paper Details

Date Published: 26 January 2005
PDF: 5 pages
Proc. SPIE 5627, High-Power Lasers and Applications III, (26 January 2005); doi: 10.1117/12.574793
Show Author Affiliations
Baoquan Yao, Harbin Institute of Technology (China)
Wanjun He, Harbin Institute of Technology (China)
Xingbao Zhang, Harbin Institute of Technology (China)
Yuezhu Wang, Harbin Institute of Technology (China)

Published in SPIE Proceedings Vol. 5627:
High-Power Lasers and Applications III
Dianyuan Fan; Ken-ichi Ueda; Jongmin Lee, Editor(s)

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