Short single-frequency self-pulsing Brillouin-Raman distributed feedback fiber laser
Short single-frequency self-pulsing Brillouin-Raman distributed feedback fiber laser
We demonstrate that the stimulated Brillouin scattering of a 250 mm long distributed feedback Raman fiber laser can self-pulse with repetition rates up to 7 MHz, pulse widths of 25 ns, and peak powers of 1.2 W. While both CW and pulsed lasing are produced from a bespoke grating at 1119 nm this laser design could be constructed at almost any wavelength, as the Raman and Brillouin gain regions are relative to the pump wavelength. The laser has a low lasing threshold for a Raman laser of 0.55 W, a peak slope efficiency of 14 %, and a maximum average output of 0.25 W. An investigation of beating between pure Raman and Raman-pumped Brillouin lasing shows that the outputs of the two processes are highly correlated and thus the Brillouin lasing is essentially single-frequency when CW and near transform limited for pulsed operation. A phenomenological model of the Raman-Brillouin interaction shows that the pulsing behaviour of such a cavity is expected and produces very similar pulsing to that the seen in experimental results.
12427-12439
Bannerman, Rex
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Smith, Devin H
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Gray, Alan
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Gates, James C.
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Broderick, Neil G.R.
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Gawith, Corin
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Smith, Peter G.R.
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11 April 2022
Bannerman, Rex
7f7d5c3e-8e5d-45d5-8fd7-8d1511330e08
Smith, Devin H
49156a41-41f1-4f1b-8ce3-ef6f894e190c
Gray, Alan
26174255-455c-4db8-b11c-42c5827c5ee5
Gates, James C.
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Broderick, Neil G.R.
7a4d0b09-189a-4334-be7c-6afd80b7dc45
Gawith, Corin
926665c0-84c7-4a1d-ae19-ee6d7d14c43e
Smith, Peter G.R.
8979668a-8b7a-4838-9a74-1a7cfc6665f6
Bannerman, Rex, Smith, Devin H, Gray, Alan, Gates, James C., Broderick, Neil G.R., Gawith, Corin and Smith, Peter G.R.
(2022)
Short single-frequency self-pulsing Brillouin-Raman distributed feedback fiber laser.
Optics Express, 30 (8), .
(doi:10.1364/OE.445876).
Abstract
We demonstrate that the stimulated Brillouin scattering of a 250 mm long distributed feedback Raman fiber laser can self-pulse with repetition rates up to 7 MHz, pulse widths of 25 ns, and peak powers of 1.2 W. While both CW and pulsed lasing are produced from a bespoke grating at 1119 nm this laser design could be constructed at almost any wavelength, as the Raman and Brillouin gain regions are relative to the pump wavelength. The laser has a low lasing threshold for a Raman laser of 0.55 W, a peak slope efficiency of 14 %, and a maximum average output of 0.25 W. An investigation of beating between pure Raman and Raman-pumped Brillouin lasing shows that the outputs of the two processes are highly correlated and thus the Brillouin lasing is essentially single-frequency when CW and near transform limited for pulsed operation. A phenomenological model of the Raman-Brillouin interaction shows that the pulsing behaviour of such a cavity is expected and produces very similar pulsing to that the seen in experimental results.
Text
Passively_Q_switching_Brillouin_Raman_distributed_feedback_fiber_hybrid_laser(1)
- Accepted Manuscript
Text
oe-30-8-12427
- Version of Record
More information
Accepted/In Press date: 16 January 2022
e-pub ahead of print date: 29 March 2022
Published date: 11 April 2022
Additional Information:
Funding Information:
Innovate UK (104613, 50414); Engineering and Physical Sciences Research Council (EP/M024539/1, EP/T00097X/1); Royal Academy of Engineering. Corin Gawith's role in this project was supported by the Royal Academy of Engineering under the Research Chairs and Senior Research Fellowships scheme.
Funding Information:
Acknowledgments. Corin Gawith’s role in this project was supported by the Royal Academy of Engineering under the Research Chairs and Senior Research Fellowships scheme.
Publisher Copyright:
© 2022 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement
Identifiers
Local EPrints ID: 471505
URI: http://eprints.soton.ac.uk/id/eprint/471505
ISSN: 1094-4087
PURE UUID: 85c905a6-7f55-420c-80b1-65401dd12fc2
Catalogue record
Date deposited: 09 Nov 2022 18:04
Last modified: 17 Mar 2024 02:52
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Contributors
Author:
Rex Bannerman
Author:
Devin H Smith
Author:
Alan Gray
Author:
James C. Gates
Author:
Neil G.R. Broderick
Author:
Corin Gawith
Author:
Peter G.R. Smith
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