Abstract
A 7.8-GHz linewidth ytterbium-doped fiber (YDF) laser with an output power of 75 W at 1,018 nm is demonstrated based on narrow-bandwidth fiber Bragg gratings. Effective suppression of spectral broadening and amplified spontaneous emission is achieved by optimizing the resonator structure and active fiber parameters. An 1,178-nm diamond Raman output pumped by this narrow-linewidth 1,018 nm source is addressed in this study, which shows a promising application of generating the sodium guide star laser at 589 nm. A single-longitudinal-mode Stokes with an output power of 0.6 W is obtained using this multimode 1,018 nm laser at the pump power of 13 W. The impact of pump spectral linewidth on the effective Raman gain coefficient is analyzed, and the laser threshold of the diamond Stokes resonator increases with the broadening of the pump linewidth.
Original language | English |
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Article number | 727109 |
Pages (from-to) | 1-6 |
Number of pages | 6 |
Journal | Frontiers in Physics |
Volume | 9 |
DOIs | |
Publication status | Published - 16 Aug 2021 |
Bibliographical note
Copyright © Copyright © 2021 Yang, Bai, Jiang, Mildren and Feng. Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.Keywords
- diamond Raman laser
- fiber laser
- second harmonic generation
- solid state laser
- stimulated Raman scattering