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High-energy pulsed operation of a Yb fibre master oscillator power amplifier with an amplified spontaneous emission light source
- Authors
- Park, Eunji; Park, Jong-sun; Jeong, Hoon; Kim, Ji Won
- Issue Date
- Aug-2019
- Publisher
- Wiley - VCH Verlag GmbH & CO. KGaA
- Keywords
- master oscillator power amplifier; spontaneous emission; pulsed operation; stimulated Brillouin scattering; fiber laser
- Citation
- Laser Physics Letters, v.16, no.8, pp 1 - 8
- Pages
- 8
- Indexed
- SCIE
SCOPUS
- Journal Title
- Laser Physics Letters
- Volume
- 16
- Number
- 8
- Start Page
- 1
- End Page
- 8
- ISSN
- 1612-2011
1612-202X
- Abstract
- We report high-energy pulsed operation of an amplified spontaneous emission (ASE) light source at 1050 nm based on a Yb-doped fiber master oscillator power amplifier (MOPA). The ASE seed beam with a tailored spectral bandwidth was temporally modulated by an acoustooptic modulator and was amplified in three Yb fiber amplifier stages. The MOPA yielded 320.7 mu J and 415.0 mu J of the pulsed outputs at a 100 kHz repetition rate for the ASE seeds with 1 nm and 2 nm bandwidths, respectively. Investigation of stimulated Brillouin scattering (SBS) in Yb fibers showed that ASE light pulses could offer a higher pulse energy than laser pulses due to the higher SBS threshold. We will discuss the prospects of further power scaling in a fiber ASE light source with a broad bandwidth by overcoming the SBS limitation.
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Related Researcher
- Kim, Ji Won
- COLLEGE OF SCIENCE AND CONVERGENCE TECHNOLOGY (DEPARTMENT OF PHOTONICS AND NANOELECTRONICS)