AUTHOR=Gao Song , Xie Xudong , Tang Jun , Fan Chen , Fu Xuejun , Chen Zhifei , Yao Ke 

TITLE=Multi-Beam Large Fundamental Mode Neodymium Glass Regenerative Amplifier With Uniform Performance

JOURNAL=Frontiers in Physics

VOLUME=Volume 10 - 2022

YEAR=2022

URL=https://www.frontiersin.org/journals/physics/articles/10.3389/fphy.2022.923402

DOI=10.3389/fphy.2022.923402

ISSN=2296-424X

ABSTRACT=In this paper, the designing method of multi-beam regenerative amplifiers with repetitive rate was proposed and demonstrated. To obtain multi-beam regenerative amplifier with uniform performance, the disparities of output energy, energy stability and mode size were analyzed, and the detailed optimizing method was presented. With the designs, eight-beam regenerative amplifiers were developed. The output performances of eight-beam regenerative amplifiers were uniform. The output energies were in the range of 25.4 mJ~28.8 mJ, and the energy stabilities over two hours were 2.4%~5.1% (PV) and 0.3%~0.9% (RMS).