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Wide-span multi-wavelength high-power diode-laser pumping of fiber Raman laser

Wide-span multi-wavelength high-power diode-laser pumping of fiber Raman laser
Wide-span multi-wavelength high-power diode-laser pumping of fiber Raman laser

A multimode silica-core fiber Raman laser was pumped directly by five wavelength-combined multimode diode lasers. The pump wavelengths were spread over a bandwidth of 700 cm-1, namely, at 976, 969, 950, 940, and 915 nm. This is larger than the Raman peak shift of 490 cm-1. The output power reached 31.5 W with an overall slope efficiency of 42% at the wavelength of 1018 nm when pumped with the maximum launched power of 175 W. According to simulations, the fiber was under-length and the output power could double in a longer fiber. Our results suggest that pumping with spectrally combined diode lasers is a promising approach to high-power fiber Raman lasers, even when the pump wavelengths are not optimized.

nonlinear optics, Optical fiber lasers, Raman lasers
1041-1135
1995-1998
Hong, Soonki
c762838f-90db-4594-9d1d-446279e59a30
Feng, Yutong
8257a816-5e4a-47bc-8aa2-e364c4d6e21e
Nilsson, Johan
f41d0948-4ca9-4b93-b44d-680ca0bf157b
Hong, Soonki
c762838f-90db-4594-9d1d-446279e59a30
Feng, Yutong
8257a816-5e4a-47bc-8aa2-e364c4d6e21e
Nilsson, Johan
f41d0948-4ca9-4b93-b44d-680ca0bf157b

Hong, Soonki, Feng, Yutong and Nilsson, Johan (2019) Wide-span multi-wavelength high-power diode-laser pumping of fiber Raman laser. IEEE Photonics Technology Letters, 31 (24), 1995-1998, [8897037]. (doi:10.1109/LPT.2019.2953195).

Record type: Article

Abstract

A multimode silica-core fiber Raman laser was pumped directly by five wavelength-combined multimode diode lasers. The pump wavelengths were spread over a bandwidth of 700 cm-1, namely, at 976, 969, 950, 940, and 915 nm. This is larger than the Raman peak shift of 490 cm-1. The output power reached 31.5 W with an overall slope efficiency of 42% at the wavelength of 1018 nm when pumped with the maximum launched power of 175 W. According to simulations, the fiber was under-length and the output power could double in a longer fiber. Our results suggest that pumping with spectrally combined diode lasers is a promising approach to high-power fiber Raman lasers, even when the pump wavelengths are not optimized.

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08897037 - Version of Record
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More information

Accepted/In Press date: 9 November 2019
e-pub ahead of print date: 12 November 2019
Published date: 15 December 2019
Keywords: nonlinear optics, Optical fiber lasers, Raman lasers

Identifiers

Local EPrints ID: 437192
URI: http://eprints.soton.ac.uk/id/eprint/437192
ISSN: 1041-1135
PURE UUID: 8fedcb43-5d10-421b-aa80-ce6e691e299a
ORCID for Yutong Feng: ORCID iD orcid.org/0000-0002-6839-2106
ORCID for Johan Nilsson: ORCID iD orcid.org/0000-0003-1691-7959

Catalogue record

Date deposited: 21 Jan 2020 17:35
Last modified: 07 Oct 2020 08:00

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