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High-power, single-mode, linearly polarized, ytterbium-doped fiber superfluorescent source

High-power, single-mode, linearly polarized, ytterbium-doped fiber superfluorescent source
High-power, single-mode, linearly polarized, ytterbium-doped fiber superfluorescent source
High-power operation of a single-mode, linearly polarized, broadband superfluorescent fiber source has been achieved by using a two-stage cladding-pumped fiber configuration comprising a low power, single-ended, ytterbium-doped superfluorescent fiber seed source and a high-power cladding-pumped, polarization-maintaining, large-mode-area, ytterbium-doped amplifier pumped by a high-power diode source at 976nm. The source yielded a maximum linearly polarized output of 106W with a slope efficiency of up to 67% with respect to the launched pump power and with a measured polarization extinction ratio of 13.5dB. The wavelength spectrum of the superfluorescent source spanned the range continuously from ~1035 to 1100nm, and the bandwidth (FWHM) of the emission spectrum was 21nm. The minimum seed power required for an output power over 100W was only 10mW, corresponding to an effective power gain in the amplifier stage of 40dB. Single-spatial-mode operation with a beam propagation factor (M2)<1.1 was achieved by bending the amplifier fiber to a bend radius of ~8cm, without a significant reduction in output power.
0146-9592
2605-2607
Wang, Pu
1ad57568-e9c9-4792-9737-a2f09deeed3d
Clarkson, W.A.
3b060f63-a303-4fa5-ad50-95f166df1ba2
Wang, Pu
1ad57568-e9c9-4792-9737-a2f09deeed3d
Clarkson, W.A.
3b060f63-a303-4fa5-ad50-95f166df1ba2

Wang, Pu and Clarkson, W.A. (2007) High-power, single-mode, linearly polarized, ytterbium-doped fiber superfluorescent source. Optics Letters, 32 (17), 2605-2607. (doi:10.1364/OL.32.002605).

Record type: Article

Abstract

High-power operation of a single-mode, linearly polarized, broadband superfluorescent fiber source has been achieved by using a two-stage cladding-pumped fiber configuration comprising a low power, single-ended, ytterbium-doped superfluorescent fiber seed source and a high-power cladding-pumped, polarization-maintaining, large-mode-area, ytterbium-doped amplifier pumped by a high-power diode source at 976nm. The source yielded a maximum linearly polarized output of 106W with a slope efficiency of up to 67% with respect to the launched pump power and with a measured polarization extinction ratio of 13.5dB. The wavelength spectrum of the superfluorescent source spanned the range continuously from ~1035 to 1100nm, and the bandwidth (FWHM) of the emission spectrum was 21nm. The minimum seed power required for an output power over 100W was only 10mW, corresponding to an effective power gain in the amplifier stage of 40dB. Single-spatial-mode operation with a beam propagation factor (M2)<1.1 was achieved by bending the amplifier fiber to a bend radius of ~8cm, without a significant reduction in output power.

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More information

Published date: 1 September 2007
Organisations: Optoelectronics Research Centre

Identifiers

Local EPrints ID: 383107
URI: https://eprints.soton.ac.uk/id/eprint/383107
ISSN: 0146-9592
PURE UUID: c934fb82-f7bd-41b3-b364-a67bb33988ab

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Date deposited: 22 Oct 2015 09:20
Last modified: 15 Jul 2019 21:00

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