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High-power Tm-doped fiber distributed-feedback laser at 1943 nm

High-power Tm-doped fiber distributed-feedback laser at 1943 nm
High-power Tm-doped fiber distributed-feedback laser at 1943 nm
We report on high-power operation of a fiber distributed-feedback (DFB) laser fabricated from Tm-doped photosensitive alumino-silicate fiber and in-band pumped by an Er/Yb fiber laser at 1565 nm. The fiber DFB laser yielded up to 875 mW of single-ended output at 1943 nm on two orthogonally polarized modes for 3.5 W of absorbed pump power. Further scaling of the DFB laser output power was achieved with the aid of a simple Tm-doped fiber amplifier stage spliced directly to the DFB fiber without the need of an optical isolator. The maximum output power from the DFB laser and fiber amplifier was >3 W for a combined absorbed pump power of 8.1 W. The influence of thermal loading, owing to quantum defect heating in the Tm doped core, on the output power and longitudinal mode behavior is discussed, and the prospects for further improvement in performance are considered.
0146-9592
2059-2061
Zhang, Z.
9f10922d-6793-4f6f-89e4-aa0125bb16ee
Shen, D.Y.
f9a1bd01-6f5c-428a-83fb-3a8b2dadbaad
Boyland, A.J.
e6e842e6-0fe6-4de2-a9b8-ca44f30ab4d5
Sahu, J.K.
009f5fb3-6555-411a-9a0c-9a1b5a29ceb2
Clarkson, W.A.
3b060f63-a303-4fa5-ad50-95f166df1ba2
Ibsen, M.
22e58138-5ce9-4bed-87e1-735c91f8f3b9
Zhang, Z.
9f10922d-6793-4f6f-89e4-aa0125bb16ee
Shen, D.Y.
f9a1bd01-6f5c-428a-83fb-3a8b2dadbaad
Boyland, A.J.
e6e842e6-0fe6-4de2-a9b8-ca44f30ab4d5
Sahu, J.K.
009f5fb3-6555-411a-9a0c-9a1b5a29ceb2
Clarkson, W.A.
3b060f63-a303-4fa5-ad50-95f166df1ba2
Ibsen, M.
22e58138-5ce9-4bed-87e1-735c91f8f3b9

Zhang, Z., Shen, D.Y., Boyland, A.J., Sahu, J.K., Clarkson, W.A. and Ibsen, M. (2008) High-power Tm-doped fiber distributed-feedback laser at 1943 nm. Optics Letters, 33 (18), 2059-2061. (doi:10.1364/OL.33.002059).

Record type: Article

Abstract

We report on high-power operation of a fiber distributed-feedback (DFB) laser fabricated from Tm-doped photosensitive alumino-silicate fiber and in-band pumped by an Er/Yb fiber laser at 1565 nm. The fiber DFB laser yielded up to 875 mW of single-ended output at 1943 nm on two orthogonally polarized modes for 3.5 W of absorbed pump power. Further scaling of the DFB laser output power was achieved with the aid of a simple Tm-doped fiber amplifier stage spliced directly to the DFB fiber without the need of an optical isolator. The maximum output power from the DFB laser and fiber amplifier was >3 W for a combined absorbed pump power of 8.1 W. The influence of thermal loading, owing to quantum defect heating in the Tm doped core, on the output power and longitudinal mode behavior is discussed, and the prospects for further improvement in performance are considered.

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Published date: 15 September 2008

Identifiers

Local EPrints ID: 65827
URI: https://eprints.soton.ac.uk/id/eprint/65827
ISSN: 0146-9592
PURE UUID: 1f1bf3ce-30bb-425e-b934-7ad578283665

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Date deposited: 23 Mar 2009
Last modified: 25 Nov 2019 21:23

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Contributors

Author: Z. Zhang
Author: D.Y. Shen
Author: A.J. Boyland
Author: J.K. Sahu
Author: W.A. Clarkson
Author: M. Ibsen

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