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Ultra-low quantum-defect heating in ytterbium-doped aluminosilicate fibers

Ultra-low quantum-defect heating in ytterbium-doped aluminosilicate fibers
Ultra-low quantum-defect heating in ytterbium-doped aluminosilicate fibers
We theoretically investigate the quantum defect between pump and signal photons in ytterbium-doped fiber lasers and amplifiers, and find that this can be as low as 0.6%. We find that the lowest quantum defects can be achieved with a low area ratio between the pump and signal waveguide of a double-clad fiber, and with high-brightness pumping in the core being an ultimate approach. The change in achievable quantum defect is small over a relatively large range of pump wavelengths, but it is still necessary to optimize the wavelengths and match the fiber length to reach the smallest quantum defect.
0733-8724
429-434
Yao, Tianfu
4fdfd7ac-bc1d-41e2-99ca-af5454c7e83f
Ji, Junhua
410bddeb-4b1a-41bc-bc9d-0d39b05fa92d
Nilsson, Johan
f41d0948-4ca9-4b93-b44d-680ca0bf157b
Yao, Tianfu
4fdfd7ac-bc1d-41e2-99ca-af5454c7e83f
Ji, Junhua
410bddeb-4b1a-41bc-bc9d-0d39b05fa92d
Nilsson, Johan
f41d0948-4ca9-4b93-b44d-680ca0bf157b

Yao, Tianfu, Ji, Junhua and Nilsson, Johan (2014) Ultra-low quantum-defect heating in ytterbium-doped aluminosilicate fibers. IEEE Journal of Lightwave Technology, 32 (3), 429-434. (doi:10.1109/JLT.2013.2290284).

Record type: Article

Abstract

We theoretically investigate the quantum defect between pump and signal photons in ytterbium-doped fiber lasers and amplifiers, and find that this can be as low as 0.6%. We find that the lowest quantum defects can be achieved with a low area ratio between the pump and signal waveguide of a double-clad fiber, and with high-brightness pumping in the core being an ultimate approach. The change in achievable quantum defect is small over a relatively large range of pump wavelengths, but it is still necessary to optimize the wavelengths and match the fiber length to reach the smallest quantum defect.

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More information

e-pub ahead of print date: 11 November 2013
Published date: 1 February 2014
Organisations: Optoelectronics Research Centre

Identifiers

Local EPrints ID: 378515
URI: http://eprints.soton.ac.uk/id/eprint/378515
ISSN: 0733-8724
PURE UUID: 89c42ca8-b82a-465b-a833-8578a73a88c7
ORCID for Johan Nilsson: ORCID iD orcid.org/0000-0003-1691-7959

Catalogue record

Date deposited: 30 Jun 2015 14:32
Last modified: 10 Dec 2019 01:51

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