High efficiency single- and dual-wavelength Nd : GdVO 4 lasers pumped by a fiber-coupled diode
APPLIED PHYSICS B-LASERS AND OPTICS(2004)
Abstract
Diode-end-pumped high-efficiency single- and dual-wavelength Nd : GdVO 4 lasers have been demonstrated. For the single-wavelength operation, the maximum cw output powers of 15.6 W (M 2 =1.54) at 1063 nm and 7.5 W (M 2 =1.40) at 1342 nm were achieved under the highest available pump power of 26.5 W, having the respective optical-to-optical conversion efficiencies of 59.2% and 28.2% as well as the average slope efficiencies of 65.1% and 32.2%. For the dual-wavelength operation, under the available pump power of 12.6 W, we obtained the average power outputs of 1.0 W (M 2 =4.85) at 1063 nm and 1.4 W (M 2 =3.22) at 1342 nm with the respective pulse durations of 23 ns and 53 ns for quasi-cw operation, and the power outputs of 1.8 W (M 2 =5.35) at 1063 nm and 2.0 W (M 2 =4.76) at 1342 nm for cw operation.
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Key words
Power Output,Pulse Duration,Conversion Efficiency,Pump Power,Average Power
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