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Open AccessArticle

500-kHz Level High Energy Double-Pass Nd:YVO4 Picosecond Amplifier with Optic–Optic Efficiency of 51%

by Xuesheng Liu 1,2,3,*, Huan He 1,2,3, Yiheng Song 1,2,3,4, Congcong Wang 1,2,3 and Zhiyong Wang 1,2,3
1
Institute of Laser Engineering, Beijing University of Technology, Beijing 100124, China
2
Beijing Engineering Research Center of Laser Technology, Beijing 100124, China
3
Key Laboratory of Trans-scale Laser Manufacturing Technology, China Ministry of Education, Beijing 100124, China
4
The 53rd Research Institute of the China Electronics Technology Group Corporation, Tianjin 300000, China
*
Author to whom correspondence should be addressed.
Appl. Sci. 2019, 9(2), 219; https://doi.org/10.3390/app9020219
Received: 10 December 2018 / Revised: 28 December 2018 / Accepted: 29 December 2018 / Published: 9 January 2019
(This article belongs to the Special Issue Ultrafast Laser Pulses)
We have demonstrated a high pulse energy and high optic–optic efficiency double-pass picosecond (ps) master oscillator power amplifier system of 1064 nm at a pulse repetition rate of 500 kHz. A 500 kHz, 7.68 μJ picosecond laser is used as the seed laser. Through one stage double-pass traveling-wave amplifier, a maximum output power of 16.19 W at a pump power of 31.7 W is generated with the optic–optic efficiency of 51.07%. The output pulse duration is 17.6 ps, corresponding to the pulse energy of 32.38 μJ. The beam quality factor M 2 were measured to be 1.28 and 1.17 along the x, y axis direction, respectively. View Full-Text
Keywords: double-pass amplifier; high energy; high optic–optic efficiency; 500 kHz double-pass amplifier; high energy; high optic–optic efficiency; 500 kHz
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Liu, X.; He, H.; Song, Y.; Wang, C.; Wang, Z. 500-kHz Level High Energy Double-Pass Nd:YVO4 Picosecond Amplifier with Optic–Optic Efficiency of 51%. Appl. Sci. 2019, 9, 219.

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