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An Ytterbium-Doped Narrow-Bandwidth Randomly Distributed Feedback Laser Emitting at a Wavelength of 976 nm

Authors :
Danila A. Davydov
Andrey A. Rybaltovsky
Svetlana S. Aleshkina
Vladimir V. Velmiskin
Mikhail E. Likhachev
Sergei M. Popov
Dmitry V. Ryakhovskiy
Yuriy K. Chamorovskiy
Andrey A. Umnikov
Denis S. Lipatov
Source :
Photonics, Vol 10, Iss 8, p 951 (2023)
Publication Year :
2023
Publisher :
MDPI AG, 2023.

Abstract

All-fiber, polarization maintaining, narrow-bandwidth, Yb-doped fiber lasers with randomly distributed feedback operated near 976 nm were realized for the first time. It was shown that the laser operated in a single, longitudinal mode regime during intervals of a few seconds. At other times, the laser generated a few longitudinal modes, but its bandwidth was always below the resolution of the optical spectrum analyzer (0.02 nm). The linewidth of each single longitudinal mode of the laser was estimated to be below 20 kHz. The reasons for this observed laser behavior were discussed and methods for achieving stable, continuous wave operation in the single-longitudinal-mode regime were proposed.

Details

Language :
English
ISSN :
23046732
Volume :
10
Issue :
8
Database :
Directory of Open Access Journals
Journal :
Photonics
Publication Type :
Academic Journal
Accession number :
edsdoj.2b0f9bd58f154764a3f1bb3d91d8a2d9
Document Type :
article
Full Text :
https://doi.org/10.3390/photonics10080951