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Simulations of multiwavelength cladding pumping of high-power fiber Raman amplifiers

Simulations of multiwavelength cladding pumping of high-power fiber Raman amplifiers
Simulations of multiwavelength cladding pumping of high-power fiber Raman amplifiers
We numerically simulate and optimize a high-power fiber Raman amplifier cladding pumped by spectrally combined diode lasers at wavelengths from ~0.9 to ~1µm in the continuous-wave regime. This amplified a signal at the first-Stokes wavelength of 1024 nm. We found that it was possible to add pumps over an increasingly wide wavelength span up to ~90 nm, while still maintaining an incremental conversion efficiency higher than 60%, even though the Raman linewidth is only ~15 nm. We investigated the dependence on the power of individual diode lasers and on the wavelength spacing and found that the total conversion efficiency reaches ~70 % with realistic pump sources based on state-of-the-art diode lasers. We believe this study shows the potential for high-power fiber Raman lasers pumped by spectrally combined multiwavelength diode and fiber laser sources.
0091-3286
Zhao, Nan
146efde9-ea66-4a62-9694-85c29c20cfc6
Hong, Soonki
c762838f-90db-4594-9d1d-446279e59a30
Harish Achar, V.
7650e4c1-cd19-4a1a-ac02-3905d1f8ac86
Feng, Yutong
8257a816-5e4a-47bc-8aa2-e364c4d6e21e
Nilsson, Johan
f41d0948-4ca9-4b93-b44d-680ca0bf157b
Zhao, Nan
146efde9-ea66-4a62-9694-85c29c20cfc6
Hong, Soonki
c762838f-90db-4594-9d1d-446279e59a30
Harish Achar, V.
7650e4c1-cd19-4a1a-ac02-3905d1f8ac86
Feng, Yutong
8257a816-5e4a-47bc-8aa2-e364c4d6e21e
Nilsson, Johan
f41d0948-4ca9-4b93-b44d-680ca0bf157b

Zhao, Nan, Hong, Soonki, Harish Achar, V., Feng, Yutong and Nilsson, Johan (2019) Simulations of multiwavelength cladding pumping of high-power fiber Raman amplifiers. Optical Engineering, 58 (10), [102701]. (doi:10.1117/1.OE.58.10.102701).

Record type: Article

Abstract

We numerically simulate and optimize a high-power fiber Raman amplifier cladding pumped by spectrally combined diode lasers at wavelengths from ~0.9 to ~1µm in the continuous-wave regime. This amplified a signal at the first-Stokes wavelength of 1024 nm. We found that it was possible to add pumps over an increasingly wide wavelength span up to ~90 nm, while still maintaining an incremental conversion efficiency higher than 60%, even though the Raman linewidth is only ~15 nm. We investigated the dependence on the power of individual diode lasers and on the wavelength spacing and found that the total conversion efficiency reaches ~70 % with realistic pump sources based on state-of-the-art diode lasers. We believe this study shows the potential for high-power fiber Raman lasers pumped by spectrally combined multiwavelength diode and fiber laser sources.

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Published date: 25 September 2019

Identifiers

Local EPrints ID: 441956
URI: http://eprints.soton.ac.uk/id/eprint/441956
ISSN: 0091-3286
PURE UUID: 93c480ee-8ab8-4a13-9b0d-02311feaedb0
ORCID for Yutong Feng: ORCID iD orcid.org/0000-0002-6839-2106
ORCID for Johan Nilsson: ORCID iD orcid.org/0000-0003-1691-7959

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Date deposited: 03 Jul 2020 16:30
Last modified: 07 Oct 2020 08:01

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Contributors

Author: Nan Zhao
Author: Soonki Hong
Author: V. Harish Achar
Author: Yutong Feng ORCID iD
Author: Johan Nilsson ORCID iD

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