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Intracavity diamond heatspreaders in lasers: the effects of birefringence

van Loon, Francesco and Kemp, Alan J. and MacLean, Alexander and Calvez, Stephane and Hopkins, John-Mark and Hastie, Jennifer E. and Dawson, Martin D. and Burns, David (2006) Intracavity diamond heatspreaders in lasers: the effects of birefringence. Optics Express, 14 (20). pp. 9250-9260. ISSN 1094-4087

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Abstract

The birefringence of a number of commercially-available diamond platelets is assessed in the context of their use for intracavity thermal management in lasers. Although diamond is normally thought of as isotropic, significant birefringence is found to be present in some samples, with considerable variation from batch to batch, and in some cases across an individual sample. Nonetheless, low-loss operation is achieved in a laser cavity containing a Brewster element, either by rotating the sample or by using a diamond platelet with low birefringence.