High-power extra-large-mode-area Yb-doped fiber laser and amplifier at 978 nm
- Title
- High-power extra-large-mode-area Yb-doped fiber laser and amplifier at 978 nm
- Author
- 김지원
- Issue Date
- 2021-05
- Publisher
- KOREAN PHYSICAL SOC
- Citation
- JOURNAL OF THE KOREAN PHYSICAL SOCIETY, v. 78, No. 11, Page. 1062-1066
- Abstract
- We report an efficient, high-power operation of a fiber laser and a power amplifier at similar to 978 nm incorporating an extra-large-mode-area (XLMA) triple-clad Yb-doped fiber. A simple numerical calculation for the gain of the XLMA Yb fiber shows that robust operation near 978 nm can be achieved due to the high Yb3+ excitation density in the XLMA Yb fiber with a relatively large core-to-cladding area ratio. The XLMA Yb fiber laser in a simple free-running configuration is constructed, yielding 38 W of continuous-wave (cw) output at 978 nm. Moreover, the single-stage XLMA Yb fiber power amplifier, employing the laser diode as a seed source, successfully produced 77 W of the amplified output at 977.2 nm without significant amplified spontaneous emission or parasitic lasing. The prospects for power scaling and applications are considered.
- URI
- https://link.springer.com/article/10.1007/s40042-021-00192-1https://repository.hanyang.ac.kr/handle/20.500.11754/166766
- ISSN
- 0374-4884; 1976-8524
- DOI
- 10.1007/s40042-021-00192-1
- Appears in Collections:
- COLLEGE OF SCIENCE AND CONVERGENCE TECHNOLOGY[E](과학기술융합대학) > PHOTONICS AND NANOELECTRONICS(나노광전자학과) > Articles
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