12-mJ 1-kHz cryogenically cooled rod Yb:YAG regenerative amplifier

Guangyin Zhang; Guangyin Zhang; Ruixuan Li; Ruixuan Li; Kui Li; Kui Li; Jie Li; Zhenao Bai; Zhongwei Fan

doi:10.3389/fphy.2024.1383634

Frontiers in Physics (Apr 2024)

12-mJ 1-kHz cryogenically cooled rod Yb:YAG regenerative amplifier

Guangyin Zhang,
Guangyin Zhang,
Ruixuan Li,
Ruixuan Li,
Kui Li,
Kui Li,
Jie Li,
Zhenao Bai,
Zhongwei Fan

Affiliations

Guangyin Zhang: Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing, China
Guangyin Zhang: School of Optoelectronics, University of the Chinese Academy of Sciences, Beijing, China
Ruixuan Li: Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing, China
Ruixuan Li: School of Optoelectronics, University of the Chinese Academy of Sciences, Beijing, China
Kui Li: Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing, China
Kui Li: School of Optoelectronics, University of the Chinese Academy of Sciences, Beijing, China
Jie Li: Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing, China
Zhenao Bai: Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing, China
Zhongwei Fan: School of Optoelectronics, University of the Chinese Academy of Sciences, Beijing, China

DOI: https://doi.org/10.3389/fphy.2024.1383634
Journal volume & issue: Vol. 12

Abstract

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We report on a continuous-wave (CW) pumped cryogenically cooled rod Yb:YAG regenerative amplifier delivering uncompressed 12-mJ, 90-ps, 1030-nm pulses at a 1-kHz repetition rate. The amplifier demonstrates an efficiency of 31.7%. A symmetric cavity design was utilized to compensate for the substantial thermal lensing effect, yielding a final measured beam quality of 1.1 in both horizontal and vertical directions. After significant gain narrowing, the measured spectra exhibit a bandwidth of 0.3 nm corresponding to an approximately 5 ps transform-limited pulse.

Published in Frontiers in Physics

ISSN: 2296-424X (Online)
Publisher: Frontiers Media S.A.
Country of publisher: Switzerland
LCC subjects: Science: Physics
Website: https://www.frontiersin.org/journals/physics

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