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Time response characteristics of photodarkening-induced loss in Yb-doped fiber amplifier

Time response characteristics of photodarkening-induced loss in Yb-doped fiber amplifier
Time response characteristics of photodarkening-induced loss in Yb-doped fiber amplifier
Photodarkening (PD) can degrade the output power and increase the thermal load in Yb-doped fiber lasers and amplifiers by increasing the propagation loss in the core [1,2]. PD can be attributed to color centers [3] and is reported to grow when the fiber is in use, over times from a few minutes to many hours (e.g., [2-4]). Typically, this is characterized in terms of a reduced output power of the operating device, but it is also possible to measure the transmission with non-resonant optical probes before, during, and after use. Although faster changes in the photodarkening are also possible [3], they have received little attention. Such fast changes can affect both the impact and the characterization of photodarkening.
Feng, Yutong
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Codemard, C.A.
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Barua, P.
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Lin, Huaiqin
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Zhu, Sheng
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Feng, Yujun
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Pidishety, S.
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Hong, Soonki
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Sahu, J.K.
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Nilsson, J.
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Feng, Yutong
8257a816-5e4a-47bc-8aa2-e364c4d6e21e
Codemard, C.A.
3aa50483-b61c-4e7e-b178-c9a88bb47bef
Barua, P.
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Lin, Huaiqin
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Zhu, Sheng
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Feng, Yujun
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Pidishety, S.
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Hong, Soonki
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Sahu, J.K.
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Nilsson, J.
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Feng, Yutong, Codemard, C.A., Barua, P., Lin, Huaiqin, Zhu, Sheng, Feng, Yujun, Pidishety, S., Hong, Soonki, Sahu, J.K. and Nilsson, J. (2019) Time response characteristics of photodarkening-induced loss in Yb-doped fiber amplifier. 2019 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2019, ICM – International Congress Centre, Germany. 22 - 26 Jun 2019. 1 pp . (doi:10.1109/CLEOE-EQEC.2019.8872358).

Record type: Conference or Workshop Item (Paper)

Abstract

Photodarkening (PD) can degrade the output power and increase the thermal load in Yb-doped fiber lasers and amplifiers by increasing the propagation loss in the core [1,2]. PD can be attributed to color centers [3] and is reported to grow when the fiber is in use, over times from a few minutes to many hours (e.g., [2-4]). Typically, this is characterized in terms of a reduced output power of the operating device, but it is also possible to measure the transmission with non-resonant optical probes before, during, and after use. Although faster changes in the photodarkening are also possible [3], they have received little attention. Such fast changes can affect both the impact and the characterization of photodarkening.

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More information

Published date: 17 October 2019
Venue - Dates: 2019 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2019, ICM – International Congress Centre, Germany, 2019-06-22 - 2019-06-26

Identifiers

Local EPrints ID: 441945
URI: http://eprints.soton.ac.uk/id/eprint/441945
PURE UUID: b123fbed-fc42-4c1c-b788-a7a4382463c0
ORCID for Yutong Feng: ORCID iD orcid.org/0000-0002-6839-2106
ORCID for Huaiqin Lin: ORCID iD orcid.org/0000-0002-9805-4570
ORCID for Sheng Zhu: ORCID iD orcid.org/0000-0002-4256-6307
ORCID for Yujun Feng: ORCID iD orcid.org/0000-0001-7839-065X
ORCID for J. Nilsson: ORCID iD orcid.org/0000-0003-1691-7959

Catalogue record

Date deposited: 02 Jul 2020 16:35
Last modified: 07 Oct 2020 08:01

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Contributors

Author: Yutong Feng ORCID iD
Author: C.A. Codemard
Author: P. Barua
Author: Huaiqin Lin ORCID iD
Author: Sheng Zhu ORCID iD
Author: Yujun Feng ORCID iD
Author: S. Pidishety
Author: Soonki Hong
Author: J.K. Sahu
Author: J. Nilsson ORCID iD

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