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

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Description/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.

Item Type: Article
ISSNs: 0146-9592 (print)
1539-4794 (electronic)
Related URLs:
Keywords: lasers, laser optics
Subjects: Q Science > QC Physics
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Physical Sciences and Engineering > Optoelectronics Research Centre
ePrint ID: 337572
Date Deposited: 30 Apr 2012 09:03
Last Modified: 27 Mar 2014 20:21
URI: http://eprints.soton.ac.uk/id/eprint/337572

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