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Proceedings Paper

500Hz high-energy laser for PLIF application
Author(s): Xudong Li; Guichuan Xu; Renpeng Yan; Feng Mei; Wentao Wu; Zhixiang Liu; Xiaolin Wen; Huasong Liu; Yugang Jiang; Rongwei Fan; Deying Chen
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Paper Abstract

Planar laser induced fluorescence (PLIF) diagnosis technology has been widely applied in flow field study and combustion diagnosis. Due to the complexity of the experimental environment of practical PLIF applications, The PLIF diagnostic system needs a good environment adaptation. In this paper, we reported a high energy Nd:YAG MOPA laser with repetition rate of 500Hz, which was applied in PLIF diagnostic system. A diode-laser side-pumped Nd:YAG module, which was pumped from five directions and optimized for better gain distribution, was employed to build a EO Q-switched Nd:YAG oscillator. A stable structure design of oscillator resonant cavity was used to improve the environmental adaptability of Nd:YAG laser. In our environmental adaptation experimentation, the laser oscillator has an energy fluctuation of <5% in the temperature range from 5°C to 45°C. In order to scale the pulse energy to meet the PLIF system requirements, we employed three 2500W diode-laser five-direction-side-pumped Nd:YAG modules as laser amplifiers to build MOPA system. Finally, the laser pulse energy of ~18mJ was amplified to 68mJ at 1064nm. Using KTP crystal as a frequency doubling crystal, we obtained a pulse energy of 35.6mJ at 532nm. The developed Nd:YAG laser has been used in our 500Hz-PLIF diagnostic system successfully.

Paper Details

Date Published: 5 November 2018
PDF: 7 pages
Proc. SPIE 10811, High-Power Lasers and Applications IX, 108110L (5 November 2018); doi: 10.1117/12.2326685
Show Author Affiliations
Xudong Li, Harbin Institute of Technology (China)
Guichuan Xu, Harbin Institute of Technology (China)
Renpeng Yan, Harbin Institute of Technology (China)
Feng Mei, Harbin Institute of Technology (China)
Wentao Wu, Harbin Institute of Technology (China)
Zhixiang Liu, Shenzhen Aerospace Industry Technology Research Institute (China)
Xiaolin Wen, Shenzhen Aerospace Industry Technology Research Institute (China)
Huasong Liu, Tianjin Jinhang Technical Physics Institute (China)
Yugang Jiang, Tianjin Jinhang Technical Physics Institute (China)
Rongwei Fan, Harbin Institute of Technology (China)
Deying Chen, Harbin Institute of Technology (China)

Published in SPIE Proceedings Vol. 10811:
High-Power Lasers and Applications IX
Ruxin Li; Upendra N. Singh, Editor(s)

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