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Appl. Sci. 2017, 7(6), 615;

Non-Pulse-Leakage 100-kHz Level, High Beam Quality Industrial Grade Nd:YVO4 Picosecond Amplifier

Academy of Opto-Electronics, Chinese Academy of Sciences, Beijing 100094, China
National Engineering Research Center for DPSSL, Beijing 102211, China
Sino-HG Applied Laser Technology Institute Company, Ltd., Tianjin 300304, China
National Key Laboratory of Science and Technology on Tunable Laser, Harbin Institute of Technology, Harbin 150001, China
MQ Photonics Research Centre, Department of Physics and Astronomy, Macquarie University, Sydney, NSW 2109, Australia
University of Chinese Academy of Sciences, Beijing 100049, China
These authors contributed equally to this work.
Author to whom correspondence should be addressed.
Academic Editor: Federico Pirzio
Received: 27 April 2017 / Revised: 22 May 2017 / Accepted: 26 May 2017 / Published: 14 June 2017
(This article belongs to the Special Issue Solid State Lasers Materials, Technologies and Applications)
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A non-pulse-leakage optical fiber pumped 100-kHz level high beam quality Nd:YVO4 picosecond amplifier has been developed. An 80 MHz, 11.5 ps mode-locked picosecond laser is used as the seed with single pulse energy of 1 nJ. By harnessing the double β-BaB2O4 (BBO) crystal Pockels cells in both the pulse picker and regenerative amplifier, the seed pulse leakage of the output is suppressed effectively with an adjustable repetition rate from 200 to 500 kHz. Through one stage traveling-wave amplifier, a maximum output power of 24.5 W is generated corresponding to the injected regenerative amplified power of 9.73 W at 500 kHz. The output pulse duration is 16.9 ps, and the beam quality factor M2 is measured to be 1.25 with near-field roundness higher than 99% at the full output power. View Full-Text
Keywords: regenerative amplifier; double-crystal Pockels cell; 100-kHz; non-pulse-leakage regenerative amplifier; double-crystal Pockels cell; 100-kHz; non-pulse-leakage

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Bai, Z.; Bai, Z.; Kang, Z.; Lian, F.; Lin, W.; Fan, Z. Non-Pulse-Leakage 100-kHz Level, High Beam Quality Industrial Grade Nd:YVO4 Picosecond Amplifier. Appl. Sci. 2017, 7, 615.

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