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Strength enhancement of single crystal laser components

Published online by Cambridge University Press:  31 January 2011

K.E. Shafer ,
D.E. Eakins ,
D.F. Bahr ,
M.G. Norton  and
K.G. Lynn
K.E. Shafer
Affiliation:
Center for Materials Research, School of Mechanical and Materials Engineering, Washington State University, Pullman, Washington 99164-2920
D.E. Eakins
Affiliation:
Center for Materials Research, School of Mechanical and Materials Engineering, Washington State University, Pullman, Washington 99164-2920
D.F. Bahr*
Affiliation:
Center for Materials Research, School of Mechanical and Materials Engineering, Washington State University, Pullman, Washington 99164-2920
M.G. Norton
Affiliation:
Center for Materials Research, School of Mechanical and Materials Engineering, Washington State University, Pullman, Washington 99164-2920
K.G. Lynn
Affiliation:
Center for Materials Research, School of Mechanical and Materials Engineering, Washington State University, Pullman, Washington 99164-2920
*
a)Address all correspondence to this author. e-mail: bahr@mail.wsu.edu
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Abstract

The effect of chemical etching on the surface roughness and fracture strength of Nd:yttrium-aluminum-garnet single crystals was investigated. Etching the laser host material in a 1:1 mixture of concentrated sulfuric and phosphoric acid at elevated temperatures enabled material removal from the surface of laser rods cored from single-crystal boules. The roughness on the rod surface increased from the as-drilled condition after etching, but after 17 μm of material was removed, the roughness remained approximately constant. The modulus of rupture increased from 133-530 MPa when 87 μm of material was removed by the chemical etching procedure.

Type
Rapid Communications
Information
Journal of Materials Research , Volume 18 , Issue 11 , November 2003 , pp. 2537 - 2539
Copyright
Copyright © Materials Research Society 2003

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References

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