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High-power Er:YAG laser with quasi-top-hat output beam

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), pp. 1463-1465. (doi:10.1364/OL.37.001463).

Record type: Article


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


Local EPrints ID: 337572
ISSN: 0146-9592
PURE UUID: 36b44721-b816-40c6-829e-edb9e58bfb37
ORCID for J.I. Mackenzie: ORCID iD

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Date deposited: 30 Apr 2012 09:03
Last modified: 18 Jul 2017 06:02

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

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