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Power scaling of ytterbium-doped fiber superfluorescent sources

Power scaling of ytterbium-doped fiber superfluorescent sources
Power scaling of ytterbium-doped fiber superfluorescent sources
Power scaling of ytterbium-doped fiber superfluorescent sources based on single-stage and two-stage cladding-pumped fiber configurations is reported. For the single-stage configuration, a novel fiber-end termination scheme was employed to suppress laser oscillation in combination with a simple all-fiber scheme for achieving a predominantly single-ended output. The fiber was cladding-pumped by a diode stack at 976 nm and yielded ~62 W of single-ended amplified spontaneous emission output for 119 W of launched pump power, limited by the onset of parasitic lasing. At pump powers in excess of 40 W, the slope efficiency with respect to the launched pump power was 67%. The emission spectrum spanned the wavelength range from 1030 to 1100 nm and the bandwidth (FWHM) was 12 nm. Scaling to higher power levels was demonstrated using a two-stage cladding-pumped fiber configuration comprising of a low-power fiber superfluorescent seed source and a high-power amplifier. The two-stage source yielded 122W of amplified spontaneous emission output (limited by available pump power) in a beam with M ~ 2.1. The slope efficiency for the amplifier with respect to the launched pump power was 77%. The prospects for further improvement in performance and output power are considered.
1077-260X
580-587
Wang, P.
df957848-e6e4-45f0-ba01-2d966a30aa67
Sahu, J.K.
009f5fb3-6555-411a-9a0c-9a1b5a29ceb2
Clarkson, W.A.
3b060f63-a303-4fa5-ad50-95f166df1ba2
Wang, P.
df957848-e6e4-45f0-ba01-2d966a30aa67
Sahu, J.K.
009f5fb3-6555-411a-9a0c-9a1b5a29ceb2
Clarkson, W.A.
3b060f63-a303-4fa5-ad50-95f166df1ba2

Wang, P., Sahu, J.K. and Clarkson, W.A. (2007) Power scaling of ytterbium-doped fiber superfluorescent sources. IEEE Journal of Selected Topics in Quantum Electronics, 13 (3), 580-587. (doi:10.1109/JSTQE.2007.897181).

Record type: Article

Abstract

Power scaling of ytterbium-doped fiber superfluorescent sources based on single-stage and two-stage cladding-pumped fiber configurations is reported. For the single-stage configuration, a novel fiber-end termination scheme was employed to suppress laser oscillation in combination with a simple all-fiber scheme for achieving a predominantly single-ended output. The fiber was cladding-pumped by a diode stack at 976 nm and yielded ~62 W of single-ended amplified spontaneous emission output for 119 W of launched pump power, limited by the onset of parasitic lasing. At pump powers in excess of 40 W, the slope efficiency with respect to the launched pump power was 67%. The emission spectrum spanned the wavelength range from 1030 to 1100 nm and the bandwidth (FWHM) was 12 nm. Scaling to higher power levels was demonstrated using a two-stage cladding-pumped fiber configuration comprising of a low-power fiber superfluorescent seed source and a high-power amplifier. The two-stage source yielded 122W of amplified spontaneous emission output (limited by available pump power) in a beam with M ~ 2.1. The slope efficiency for the amplifier with respect to the launched pump power was 77%. The prospects for further improvement in performance and output power are considered.

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Published date: May 2007

Identifiers

Local EPrints ID: 47785
URI: https://eprints.soton.ac.uk/id/eprint/47785
ISSN: 1077-260X
PURE UUID: 4d1c4294-42e9-4bf9-b63e-b94bc1880cfa

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Date deposited: 10 Aug 2007
Last modified: 13 Mar 2019 20:59

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Contributors

Author: P. Wang
Author: J.K. Sahu
Author: W.A. Clarkson

University divisions

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