All solid-state continuous-wave Nd:YAG laser at 1319 and 659.5 nm under direct 885 nm pumping |
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Authors: | Y F Lü X H Zhang J Xia X D Yin L Bao and H Quan |
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Institution: | 1.School of Sciences,Changchun University of Sciences and Technology,Changchun,China;2.Jilin Junkun Optoelectronics Company Limited,Changchun,China |
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Abstract: | The continuous-wave high efficiency laser emission of Nd:YAG at the fundamental wavelength of 1319 nm and its 659.5-nm second
harmonic obtained by intracavity frequency doubling with an LBO nonlinear crystal is investigated under pumping by diode laser
at 885 nm (on the 4
F
3/2 → 4
I
13/2 transition). An end-pumped Nd:YAG crystal yielded 9.1 W at 1319 nm of continuous-wave output power for 18.2 W of absorbed
pump power. The slope efficiency with respect to the absorbed pump power is 0.55. Furthermore, 5.2 W 659.5 nm red light is
acquired by frequency doubling, resulting in an optical-to-optical efficiency with respect to the absorbed pump power of 0.286.
Comparative results obtained for the pump with diode laser at 808 nm (on the 4
F
5/2 → 4
I
13/2 transition) are given in order to prove the advantages of the 885 nm wavelength pumping. |
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Keywords: | |
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