High-power Er:YAG laser with quasi-top-hat output beam
High-power Er:YAG laser with quasi-top-hat output beam
A simple method for simultaneously exciting the fundamental (TEM00) transverse mode and first order Laguerre-Gaussian (LG01) donut mode in an end-pumped solid-state laser to yield a quasi-top-hat output beam is reported. This approach has been applied to an Er:YAG laser, in-band pumped by an Er,Yb fiber laser, yielding 9.6 W of continuous-wave output at 1645 nm in a top-hat-like beam with beam propagation factor (M2) < 2.1 for 24 W of incident pump power at 1532 nm. The corresponding slope efficiency with respect to incident pump power was 49%. The prospects of further scaling of output power and improved overall efficiency are considered.
lasers, laser optics
1463-1465
Kim, J.W.
3d0ba669-a721-4922-ab5b-a73e2f81816a
Mackenzie, J.I.
1d82c826-fdbf-425b-ac04-be43ccf12008
Hayes, J.R.
a6d3acd6-d7d5-4614-970e-0e8c594e48e2
Clarkson, W.A.
3b060f63-a303-4fa5-ad50-95f166df1ba2
24 April 2012
Kim, J.W.
3d0ba669-a721-4922-ab5b-a73e2f81816a
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.
(2012)
High-power Er:YAG laser with quasi-top-hat output beam.
Optics Letters, 37 (9), .
(doi:10.1364/OL.37.001463).
Abstract
A simple method for simultaneously exciting the fundamental (TEM00) transverse mode and first order Laguerre-Gaussian (LG01) donut mode in an end-pumped solid-state laser to yield a quasi-top-hat output beam is reported. This approach has been applied to an Er:YAG laser, in-band pumped by an Er,Yb fiber laser, yielding 9.6 W of continuous-wave output at 1645 nm in a top-hat-like beam with beam propagation factor (M2) < 2.1 for 24 W of incident pump power at 1532 nm. The corresponding slope efficiency with respect to incident pump power was 49%. The prospects of further scaling of output power and improved overall efficiency are considered.
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Published date: 24 April 2012
Keywords:
lasers, laser optics
Organisations:
Optoelectronics Research Centre
Identifiers
Local EPrints ID: 337572
URI: http://eprints.soton.ac.uk/id/eprint/337572
ISSN: 0146-9592
PURE UUID: 36b44721-b816-40c6-829e-edb9e58bfb37
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Date deposited: 30 Apr 2012 09:03
Last modified: 15 Mar 2024 03:07
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Contributors
Author:
J.W. Kim
Author:
J.I. Mackenzie
Author:
J.R. Hayes
Author:
W.A. Clarkson
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