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High power Er:YAG laser with radially-polarized Laguerre-Gaussian (LG01) mode output

High power Er:YAG laser with radially-polarized Laguerre-Gaussian (LG01) mode output
High power Er:YAG laser with radially-polarized Laguerre-Gaussian (LG01) mode output
A simple method for conditioning the pump beam in an end-pumped solid-state laser to allow direct excitation of the first order Laguerre-Gaussian doughnut (LG01) mode is reported. This approach has been applied to a hybrid (fiber-laser-pumped) Er:YAG laser yielding 13.1 W of continuous-wave output at 1645 nm in a radially-polarized LG01 doughnut beam with beam propagation factor (M2) < 2.4 for 34 W of incident pump power at 1532 nm. The corresponding slope efficiency with respect to incident pump power was 48%. The prospects of further power scaling and improved laser performance are discussed.
1094-4087
14526-14531
Kim, J.W.
43f1b0c3-5a59-4449-a56a-386668bd061a
Mackenzie, J.I.
1d82c826-fdbf-425b-ac04-be43ccf12008
Hayes, J.R.
a6d3acd6-d7d5-4614-970e-0e8c594e48e2
Clarkson, W.A.
3b060f63-a303-4fa5-ad50-95f166df1ba2
Kim, J.W.
43f1b0c3-5a59-4449-a56a-386668bd061a
Mackenzie, J.I.
1d82c826-fdbf-425b-ac04-be43ccf12008
Hayes, J.R.
a6d3acd6-d7d5-4614-970e-0e8c594e48e2
Clarkson, W.A.
3b060f63-a303-4fa5-ad50-95f166df1ba2

Kim, J.W., Mackenzie, J.I., Hayes, J.R. and Clarkson, W.A. (2011) High power Er:YAG laser with radially-polarized Laguerre-Gaussian (LG01) mode output. Optics Express, 19 (15), 14526-14531. (doi:10.1364/OE.19.014526).

Record type: Article

Abstract

A simple method for conditioning the pump beam in an end-pumped solid-state laser to allow direct excitation of the first order Laguerre-Gaussian doughnut (LG01) mode is reported. This approach has been applied to a hybrid (fiber-laser-pumped) Er:YAG laser yielding 13.1 W of continuous-wave output at 1645 nm in a radially-polarized LG01 doughnut beam with beam propagation factor (M2) < 2.4 for 34 W of incident pump power at 1532 nm. The corresponding slope efficiency with respect to incident pump power was 48%. The prospects of further power scaling and improved laser performance are discussed.

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Published date: 13 July 2011
Organisations: Optoelectronics Research Centre
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Identifiers

Local EPrints ID: 201145
URI: http://eprints.soton.ac.uk/id/eprint/201145
DOI: doi:10.1364/OE.19.014526
ISSN: 1094-4087
PURE UUID: 2eb924b9-a5a3-4bcc-b9c3-d0bb60f62022
ORCID for J.I. Mackenzie: ORCID iD orcid.org/0000-0002-3355-6051

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Date deposited: 28 Oct 2011 09:29
Last modified: 15 Mar 2024 03:07

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Contributors

Author: J.W. Kim
Author: J.I. Mackenzie ORCID iD
Author: J.R. Hayes
Author: W.A. Clarkson

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