期刊
OPTIK
卷 243, 期 -, 页码 -出版社
ELSEVIER GMBH
DOI: 10.1016/j.ijleo.2021.167487
关键词
Spatiotemporal mode-locked; All-fiber structure; Beam self-cleaning; Large mode area fiber
类别
资金
- National Key Research and Development Program of China [2016YFB0401901]
- National Natural Science Foundation of China [61675188]
In this study, we demonstrate an all-fiber spatiotemporal mode-locked laser based on graded-index multimode fiber, which is capable of delivering high single-pulse energy and improved beam quality. By amplifying the pulse and achieving self-cleaning effect, high power pulses with high beam quality can be obtained in the all-fiber system.
We demonstrate an all-fiber spatiotemporal mode-locked laser based on graded-index multimode fiber. Due to the high damage threshold of graded-index multimode fiber devices, the output single-pulse energy reach up to 11.67 nJ. The beam quality at mode-locked state is significantly improved compared with continuous wave state as a result of the self-cleaning effect. By amplifying the pulse in the multimode fiber amplifier, high power pulses with high beam quality can be obtained in the all-fiber system based on graded-index MMFs. We present an approach to get high single-pulse energy in the all-fiber multimode laser with a near single-mode output beam.
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