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Conical refraction Nd:KGd(WO4)(2) laser

Conical refraction Nd:KGd(WO4)(2) laser

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Original languageEnglish
Pages (from-to)2753-2759
Number of pages7
JournalOptics Express
Issue number3
StatePublished - 1 Feb 2010


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(WO4)(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. (C) 2010 Optical Society of America



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