Efficient Passively Q-Switched Nd:YAG/Cr super(4+):YAG/LBO Microchip Laser

Performance of an LD-end-pumped passively Q-switched Nd:YAG/Cr super(4+): YAG microchip laser operating at 1123nm is studied. A maximum average output power of 517mW with an optical-to-optical conversion efficiency of 12.6% and a slope efficiency of 25.8% is obtained under a pump power of 4.1 W. A m...

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Bibliographic Details
Published inChinese physics letters Vol. 32; no. 10; pp. 104205 - 1-104205-3
Main Authors Fu, Sheng-Gui, Ouyang, Xue-Ying, Liu, Xiao-Juan
Format Journal Article
LanguageEnglish
Published 01.10.2015
Subjects
Conversion
Direct power generation
Frequency doublers
Lasers
LBO
Pulse repetition rate
Pumps
Slopes
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Summary:Performance of an LD-end-pumped passively Q-switched Nd:YAG/Cr super(4+): YAG microchip laser operating at 1123nm is studied. A maximum average output power of 517mW with an optical-to-optical conversion efficiency of 12.6% and a slope efficiency of 25.8% is obtained under a pump power of 4.1 W. A minimum pulse width of 1.1 ns with a pulse repetition rate of 20.2 kHz is obtained, and the corresponding pulse energy and peak power are 25.6 mu J and 23.3 kW, respectively. To our knowledge, the 23.3 kW peak power is the highest among 1123 nm lasers. Additionally, based on the 1123nm laser, with LBO as the frequency doubler, a 288-mW green-yellow laser at 561nm is successfully achieved.
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ISSN:0256-307X
1741-3540
DOI:10.1088/0256-307X/32/10/104205