110 W double-ended ytterbium-doped fiber superfluorescent source with M2=1.6
110 W double-ended ytterbium-doped fiber superfluorescent source with M2=1.6
High-power operation of a broadband superfluorescent fiber source has been achieved via the process of amplified spontaneous emission (ASE) in a double-clad Yb-doped multimode-offset-core fiber by using a novel fiber-end termination geometry to suppress lasing. The fiber was cladding pumped by a high-power diode source at 976 nm and yielded a maximum ASE output of 63 and 47 W from the two ends of the fiber, respectively. The maximum combined ASE output was 110 W with slope efficiency with respect to launched pump power of up to 68%. The wavelength spectrum of the ASE source spanned the range from ~1032 to 1120 nm, and the bandwidth (FWHM) of the emission spectrum was 40 nm. The output beam was slightly multimode with a beam-quality factor (M) of 1.6. The prospects for further improvement in performance are considered.
3116-3118
Wang, P.
df957848-e6e4-45f0-ba01-2d966a30aa67
Sahu, Jayanta
009f5fb3-6555-411a-9a0c-9a1b5a29ceb2
Clarkson, W.A.
3b060f63-a303-4fa5-ad50-95f166df1ba2
November 2006
Wang, P.
df957848-e6e4-45f0-ba01-2d966a30aa67
Sahu, Jayanta
009f5fb3-6555-411a-9a0c-9a1b5a29ceb2
Clarkson, W.A.
3b060f63-a303-4fa5-ad50-95f166df1ba2
Wang, P., Sahu, Jayanta and Clarkson, W.A.
(2006)
110 W double-ended ytterbium-doped fiber superfluorescent source with M2=1.6.
Optics Letters, 31 (21), .
(doi:10.1364/OL.31.003116).
Abstract
High-power operation of a broadband superfluorescent fiber source has been achieved via the process of amplified spontaneous emission (ASE) in a double-clad Yb-doped multimode-offset-core fiber by using a novel fiber-end termination geometry to suppress lasing. The fiber was cladding pumped by a high-power diode source at 976 nm and yielded a maximum ASE output of 63 and 47 W from the two ends of the fiber, respectively. The maximum combined ASE output was 110 W with slope efficiency with respect to launched pump power of up to 68%. The wavelength spectrum of the ASE source spanned the range from ~1032 to 1120 nm, and the bandwidth (FWHM) of the emission spectrum was 40 nm. The output beam was slightly multimode with a beam-quality factor (M) of 1.6. The prospects for further improvement in performance are considered.
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Published date: November 2006
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Local EPrints ID: 46939
URI: http://eprints.soton.ac.uk/id/eprint/46939
ISSN: 0146-9592
PURE UUID: 7effb52e-3a38-4425-a0b7-3f236157c361
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Date deposited: 24 Jul 2007
Last modified: 16 Mar 2024 03:20
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Author:
P. Wang
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