Journal
CERAMICS INTERNATIONAL
Volume 31, Issue 8, Pages 1085-1090Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2004.11.009
Keywords
direct bonding; laser crystal; Nd : YVO4; finite-element method
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We succeeded in the fabrication of bonded laser crystals composed of a neodymium-doped YVO4 laser crystal (Nd:YVO4) and its host crystals YVO4 by a newly developed dry etching technique using an argon ion beam. The optical distortion caused by the bonded interface of size 5 mm x 6 mm was estimated to be 0.05 lambda at 633 nm. From the comparison of laser performance pumped by a laser diode, the bonded crystals could increase the laser output power by nearly twice that of the non-bonded crystals with the same degree of polarization of 99.2%. To analyze the mechanism of the enhanced reduction of the thermal load in the bonded crystals, numerical simulations with a finite-element method were also performed. (c) 2004 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
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