Double-Arched LD Array Stagger Pumped Electro-Optic Q-Switched Nd：YAG Laser without Water Cooling

We report an experimental study on a double-arched LD array stagger pumped electro-optic Q-switched Nd：YAG laser without water cooling by using a convex-concave compensate resonator. Perfect matching of the gain field inside the rod and the fundamental mode of the cavity is made by this structure. W...

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Bibliographic Details
Published in:Chinese physics letters 2010-02, Vol.27 (2), p.110-112
Main Author: 陈薪羽 金光勇 于永吉 王超 郝大伟 王奕博
Format: Article
Language:English
Subjects:
Arrays
Beams (radiation)
Conversion
Electro-optics
Holes
Injection current
Lasers
Nd：YAG激光
Water cooling
无水冷
电光调Q开关
能量转换效率
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Summary:We report an experimental study on a double-arched LD array stagger pumped electro-optic Q-switched Nd：YAG laser without water cooling by using a convex-concave compensate resonator. Perfect matching of the gain field inside the rod and the fundamental mode of the cavity is made by this structure. When the repetition rate is 20 Hz, A maximum output energy at 1064 nm wavelength of 176 mJ （M2=1.55） and 9.6 ns FWHM pulse width in fundamental mode Q-switch operation is obtained with LD injection current 120 A. The optical-optical conversion efficiency is 14.7%, the divergence angle of the output beam is about 1.8 mrad.
ISSN:0256-307X
1741-3540
DOI:10.1088/0256-307X/27/2/024209