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Opt Express. 2010 Feb 1;18(3):2753-9. doi: 10.1364/OE.18.002753.

Conical refraction Nd:KGd(WO4)2 laser.

Author information

  • 1School of Engineering, Physics and Mathematics, University of Dundee, Dundee DD1 4HN, United Kingdom. a.abdolvand@dundee.ac.uk

Abstract

In 1832 Hamilton predicted conical refraction, concluding that if a beam propagates along an optic axis of a biaxial crystal, a hollow cone of light will emerge. Nearly two centuries on, cascade conical refraction involving multiple crystals has not been investigated. We empirically investigate a unique two-crystal configuration, and use this to demonstrate an ultra-efficient conical refraction Nd:KGd(WO(4))(2) laser providing multi-watt output with excellent beam quality independent of resonator design with a slope efficiency close to the theoretical maximum, offering a new route for power and brightness-scaling in solid-state bulk lasers.

PMID:
20174104
[PubMed]
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