Off-peak dual-wavelength multimode diode-laser-pumped fiber Raman laser
Off-peak dual-wavelength multimode diode-laser-pumped fiber Raman laser
We demonstrate a fiber Raman laser directly pumped by two spectrally combined multimode diode lasers at ~950 nm and ~976 nm. The emission wavelength becomes 1020 nm, which corresponds to the 1st Stokes of 976 nm. The pump separation of 270 cm-1 is both much smaller than the Raman peak shift of 440 cm-1 and much larger than the Raman linewidth of around 100 cm-1, which is unfavorable for efficient Raman conversion. Nevertheless, the addition of the pump at 950 nm triples the output power compared to pumping only at 976 nm. We reach 23 W of output power with slope efficiency of 51% and beam quality M2 of 5.2 in a germanosilicate graded-index fiber.
Brightness, Diode lasers, Fiber lasers, Fiber nonlinear optics, Laser excitation, Power generation, Pump lasers, Raman Lasers, Stimulated emission
1-4
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
(2018)
Off-peak dual-wavelength multimode diode-laser-pumped fiber Raman laser.
IEEE Photonics Technology Letters, .
(doi:10.1109/LPT.2018.2863559).
Abstract
We demonstrate a fiber Raman laser directly pumped by two spectrally combined multimode diode lasers at ~950 nm and ~976 nm. The emission wavelength becomes 1020 nm, which corresponds to the 1st Stokes of 976 nm. The pump separation of 270 cm-1 is both much smaller than the Raman peak shift of 440 cm-1 and much larger than the Raman linewidth of around 100 cm-1, which is unfavorable for efficient Raman conversion. Nevertheless, the addition of the pump at 950 nm triples the output power compared to pumping only at 976 nm. We reach 23 W of output power with slope efficiency of 51% and beam quality M2 of 5.2 in a germanosilicate graded-index fiber.
Text
08425695
- Accepted Manuscript
More information
Accepted/In Press date: 3 August 2018
e-pub ahead of print date: 6 August 2018
Keywords:
Brightness, Diode lasers, Fiber lasers, Fiber nonlinear optics, Laser excitation, Power generation, Pump lasers, Raman Lasers, Stimulated emission
Identifiers
Local EPrints ID: 423043
URI: http://eprints.soton.ac.uk/id/eprint/423043
ISSN: 1041-1135
PURE UUID: 05aad699-9841-4599-9e5b-8f40a56a6311
Catalogue record
Date deposited: 13 Aug 2018 16:30
Last modified: 16 Mar 2024 03:01
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Contributors
Author:
Soonki Hong
Author:
Yutong Feng
Author:
Johan Nilsson
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