High energy quadruple pass amplifier for high power laser preamplifier module

Yujie Peng; Jiangfeng Wang; Xue Pan; Xinghua Lu; Xuechun Li

doi:10.1117/12.2032802

17 September 2013 High energy quadruple pass amplifier for high power laser preamplifier module

Yujie Peng, Jiangfeng Wang, Xue Pan, Xinghua Lu, Xuechun Li

Proceedings Volume 8904, International Symposium on Photoelectronic Detection and Imaging 2013: High Power Lasers and Applications; 89040I (2013) https://doi.org/10.1117/12.2032802
Event: ISPDI 2013 - Fifth International Symposium on Photoelectronic Detection and Imaging, 2013, Beijing, China

Abstract

Pre-amplifier between the frontend and main power amplifier is the key unit of high power laser divers. The recent progresses on the off-axis quadruple pass amplifier are presented, which include the beam path design, parasitic oscillation research and experimental results. A single longitudinal mode, temporally shaped laser pulse with 5ns pulse duration at 1053nm is injected into a Nd: Glass regenerative amplifier, which can provide a 12mJ energy output with 0.5% long term energy stability. The quadruple pass amplifier is designed as an off-axis pattern. With 1.3mJ energy injection, amplified pulse with 16.5J can be achieved, and the measured output energy stability of the amplifier is 7.3% (PV) at this output energy level, corresponding to a 21 shot result. The total gain of the amplifier is more than 10,000. The parasitic oscillation was analyzed and discussed, and the parasitic mode and pencil beam are neither observed in the experiment.

Citation Download Citation

Yujie Peng, Jiangfeng Wang, Xue Pan, Xinghua Lu, and Xuechun Li "High energy quadruple pass amplifier for high power laser preamplifier module", Proc. SPIE 8904, International Symposium on Photoelectronic Detection and Imaging 2013: High Power Lasers and Applications, 89040I (17 September 2013); https://doi.org/10.1117/12.2032802

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KEYWORDS

Amplifiers

Optical amplifiers

Pulsed laser operation

High power lasers

Fusion energy

Near field

Glasses

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