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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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.
|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
|Date Deposited:||30 Apr 2012 09:03|
|Last Modified:||28 Jul 2013 01:12|
|RDF:||RDF+N-Triples, RDF+N3, RDF+XML, Browse.|
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