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High-power ytterbium-doped fibre master-oscillator power-amplifier at 1018 nm
- Authors
- Park, Hye-mi; Oh, Yejin; Park, Eunji; Park, Jongseon; Jeong, Hoon; Kim, Jiwon
- Issue Date
- Feb-2022
- Publisher
- Maik Nauka/Interperiodica Publishing
- Keywords
- high-power lasers; master-oscillator power-amplifier; Yb fibre lasers; tandem pumping
- Citation
- Laser Physics, v.32, no.2, pp 1 - 6
- Pages
- 6
- Indexed
- SCIE
SCOPUS
- Journal Title
- Laser Physics
- Volume
- 32
- Number
- 2
- Start Page
- 1
- End Page
- 6
- ISSN
- 1054-660X
1555-6611
- Abstract
- A high-power master-oscillator power-amplifier (MOPA) at 1018 nm employing ytterbium (Yb)-doped fibres as a gain medium is reported. Utilizing a diffraction grating as a reflector, we could successfully suppress the influence of the broadband amplified spontaneous emission on the master-oscillator or the power-amplifier, resulting in stable amplification of the laser signal at 1018 nm. Based on a simple theoretical simulation on gain spectra and experimental investigation on parasitic lasing thresholds, the Yb fibre MOPA constructed in-house yielded 220 W of output at 1018 nm with a beam propagation factor (M-2) of 1.1. The prospects for further power scaling are considered.
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Related Researcher
- Kim, Ji Won
- COLLEGE OF SCIENCE AND CONVERGENCE TECHNOLOGY (DEPARTMENT OF PHOTONICS AND NANOELECTRONICS)