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Thermal resilience of polymer-coated double-clad fiber

Thermal resilience of polymer-coated double-clad fiber
Thermal resilience of polymer-coated double-clad fiber
Following the advance of ytterbium-doped fiber laser to kW-level cw-output power, there is a particular interest in using shorter fiber length with large cores since they mitigate detrimental nonlinear effect such as stimulated Raman and Brillouin scattering. However, most of the fibers lasers used currently are coated with a low-index polymer to guide the pump light. This is a simple and effective solution. These polymer coatings impede the extraction of the heat deposited in the doped region in the laser cycle because their thermal conductivity is an order of magnitude lower than that of fused silica. Therefore, the record power extraction per unit length has been held by all-glass rod-type fiber laser at about 250-300 W/m.
Codemard, C.A.
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Shirakawa, A.
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Sahu, J.K.
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Yoo, S.
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Jeong, Y.
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Nilsson, J.
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Codemard, C.A.
3aa50483-b61c-4e7e-b178-c9a88bb47bef
Shirakawa, A.
041e38a5-1a5c-45dc-905e-e324fa9d7b00
Sahu, J.K.
009f5fb3-6555-411a-9a0c-9a1b5a29ceb2
Yoo, S.
4714ed34-2088-4d00-a4bb-9d153384c36e
Jeong, Y.
1c4007b7-fc94-4f7d-a080-929d40946902
Nilsson, J.
f41d0948-4ca9-4b93-b44d-680ca0bf157b

Codemard, C.A., Shirakawa, A., Sahu, J.K., Yoo, S., Jeong, Y. and Nilsson, J. (2009) Thermal resilience of polymer-coated double-clad fiber. European Conference on Lasers and Electro-Optics (CLEO/Europe-EQEC), Germany. 13 - 18 Jun 2009.

Record type: Conference or Workshop Item (Paper)

Abstract

Following the advance of ytterbium-doped fiber laser to kW-level cw-output power, there is a particular interest in using shorter fiber length with large cores since they mitigate detrimental nonlinear effect such as stimulated Raman and Brillouin scattering. However, most of the fibers lasers used currently are coated with a low-index polymer to guide the pump light. This is a simple and effective solution. These polymer coatings impede the extraction of the heat deposited in the doped region in the laser cycle because their thermal conductivity is an order of magnitude lower than that of fused silica. Therefore, the record power extraction per unit length has been held by all-glass rod-type fiber laser at about 250-300 W/m.

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Published date: 14 June 2009
Venue - Dates: European Conference on Lasers and Electro-Optics (CLEO/Europe-EQEC), Germany, 2009-06-13 - 2009-06-18

Identifiers

Local EPrints ID: 78960
URI: http://eprints.soton.ac.uk/id/eprint/78960
PURE UUID: 68b467cb-5b73-4e17-9363-86b681589850
ORCID for J. Nilsson: ORCID iD orcid.org/0000-0003-1691-7959

Catalogue record

Date deposited: 19 Mar 2010
Last modified: 24 Apr 2020 00:27

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