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Temperature distribution along DFB fibre lasers

Temperature distribution along DFB fibre lasers
Temperature distribution along DFB fibre lasers
We have investigated the effects of self heating of distributed feedback (DFB) fibre lasers on the performance of these lasers. Self heating, caused by non-radiative decay from the pump level to the upper laser level, increased the DFB laser temperature. The temperature decayed exponentially along the laser as the pump power was absorbed. The temperature profile depended on the absorption coefficient of the pump power and the lasing conditions. The non-uniform temperature profile chirped the grating which in turn detuned the laser cavity. The laser performance depended largely on the thermal properties of the material surrounding the laser. We believe that the temperature distribution levels out when the heat conductivity is increased along the laser, e.g. by placing the laser on an aluminium block.
1-6
Hadeler, O.
421d57e1-e48d-49a4-b3aa-5158e98aade6
Rønnekleiv, E.
da4ad315-26f5-4c7b-874f-57339fc4406f
Berendt, M.
8bbeb612-7bcf-4d49-8448-b3c0ef3cc362
Zervas, M.
1840a474-dd50-4a55-ab74-6f086aa3f701
Hadeler, O.
421d57e1-e48d-49a4-b3aa-5158e98aade6
Rønnekleiv, E.
da4ad315-26f5-4c7b-874f-57339fc4406f
Berendt, M.
8bbeb612-7bcf-4d49-8448-b3c0ef3cc362
Zervas, M.
1840a474-dd50-4a55-ab74-6f086aa3f701

Hadeler, O., Rønnekleiv, E., Berendt, M. and Zervas, M. (1999) Temperature distribution along DFB fibre lasers. IEE Colloquium. pp. 1-6 . (doi:10.1049/ic:19990147).

Record type: Conference or Workshop Item (Paper)

Abstract

We have investigated the effects of self heating of distributed feedback (DFB) fibre lasers on the performance of these lasers. Self heating, caused by non-radiative decay from the pump level to the upper laser level, increased the DFB laser temperature. The temperature decayed exponentially along the laser as the pump power was absorbed. The temperature profile depended on the absorption coefficient of the pump power and the lasing conditions. The non-uniform temperature profile chirped the grating which in turn detuned the laser cavity. The laser performance depended largely on the thermal properties of the material surrounding the laser. We believe that the temperature distribution levels out when the heat conductivity is increased along the laser, e.g. by placing the laser on an aluminium block.

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More information

Published date: 1999
Venue - Dates: IEE Colloquium, 1999-03-26

Identifiers

Local EPrints ID: 441589
URI: http://eprints.soton.ac.uk/id/eprint/441589
PURE UUID: a5e81fee-4661-4cc4-a9f3-1af8ce8a9950
ORCID for M. Zervas: ORCID iD orcid.org/0000-0002-0651-4059

Catalogue record

Date deposited: 18 Jun 2020 16:52
Last modified: 07 Oct 2020 03:24

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