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Thermally-guided Yb-doped fiber-rod amplifier and laser

Thermally-guided Yb-doped fiber-rod amplifier and laser
Thermally-guided Yb-doped fiber-rod amplifier and laser
In this paper we describe a thermally-guided fiber-rod amplifier and laser oscillator, which exploit thermal guiding to achieve mode control. This power scalable approach operates with mode sizes that are typically an order of magnitude larger than traditional single-mode fibers. Operating as an amplifier we achieve a small-signal gain of 5dB at 1030nm, whilst maintaining excellent beam quality (M2 < 1.1). In a laser configuration we obtained 13.1W of diffraction-limited (M2 < 1.1) output power at 1032.5nm, with a slope efficiency 53% with respect to absorbed power. A model predicting beam evolution through the thermally-guided fiber-rod gain medium is presented and validated.
Laser, fibre
0946-2171
1-10
Smith, Callum R.
00a3e4af-743b-4c7f-b1df-bb142e176d63
Simakov, Nikita
984eef10-d13b-4cc6-852f-bcc58b432832
Hemming, Alexander
7e1c851c-5008-4997-be15-400e271eebb3
Clarkson, W.A.
3b060f63-a303-4fa5-ad50-95f166df1ba2
Smith, Callum R.
00a3e4af-743b-4c7f-b1df-bb142e176d63
Simakov, Nikita
984eef10-d13b-4cc6-852f-bcc58b432832
Hemming, Alexander
7e1c851c-5008-4997-be15-400e271eebb3
Clarkson, W.A.
3b060f63-a303-4fa5-ad50-95f166df1ba2

Smith, Callum R., Simakov, Nikita, Hemming, Alexander and Clarkson, W.A. (2019) Thermally-guided Yb-doped fiber-rod amplifier and laser. Applied Physics B, 125 (32), 1-10. (doi:10.1007/s00340-018-7126-3).

Record type: Article

Abstract

In this paper we describe a thermally-guided fiber-rod amplifier and laser oscillator, which exploit thermal guiding to achieve mode control. This power scalable approach operates with mode sizes that are typically an order of magnitude larger than traditional single-mode fibers. Operating as an amplifier we achieve a small-signal gain of 5dB at 1030nm, whilst maintaining excellent beam quality (M2 < 1.1). In a laser configuration we obtained 13.1W of diffraction-limited (M2 < 1.1) output power at 1032.5nm, with a slope efficiency 53% with respect to absorbed power. A model predicting beam evolution through the thermally-guided fiber-rod gain medium is presented and validated.

Text
Smith 2019 Article Thermally Guided Yb-doped Fiber - Version of Record
Available under License Creative Commons Attribution.
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More information

Accepted/In Press date: 16 December 2018
e-pub ahead of print date: 4 February 2019
Published date: February 2019
Keywords: Laser, fibre

Identifiers

Local EPrints ID: 428032
URI: https://eprints.soton.ac.uk/id/eprint/428032
ISSN: 0946-2171
PURE UUID: 538eaaa3-4569-4bd1-8dc3-876d29353f4d

Catalogue record

Date deposited: 07 Feb 2019 17:30
Last modified: 09 Dec 2019 17:44

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