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Thermomechanical modelling of high power laser diode degradation

Published online by Cambridge University Press:  11 July 2012

J. Anaya ,
A. Martin-Martin ,
J. Souto ,
P. Iñiguez  and
J. Jimenez
J. Anaya
Affiliation:
Física de la Materia Condensada, Universidad de Valladolid, Paseo de Belén 1, ed.i+d, 47011 Valladolid, Spain
A. Martin-Martin
Affiliation:
Física de la Materia Condensada, Universidad de Valladolid, Paseo de Belén 1, ed.i+d, 47011 Valladolid, Spain
J. Souto
Affiliation:
Física de la Materia Condensada, Universidad de Valladolid, Paseo de Belén 1, ed.i+d, 47011 Valladolid, Spain
P. Iñiguez
Affiliation:
Física Teórica, Atómica y Optica, Universidad de Valladolid, 47011 Valladolid, Spain.
J. Jimenez
Affiliation:
Física de la Materia Condensada, Universidad de Valladolid, Paseo de Belén 1, ed.i+d, 47011 Valladolid, Spain
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Abstract

Catastrophic degradation of high power laser diodes is due to the generation of extended defects during the laser operation. The stress necessary for is induced by temperature gradients generated by local enhancement of the temperature due to non radiative recombination and subsequent laser self absorption. The thermal stresses induced by such temperature gradient are calculated using finite element methods, showing that the yield strength can be surpassed. The thermal conductivity of the laser structure is shown to play a relevant role in the process.

Keywords

laserdefectsthermal conductivity
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1432: Symposium G – “Reliability and Materials Issues of III-V and II-VI Semiconductor Optical and Electron Devices and Materials II” , 2012 , mrss12-1432-g01-05
Copyright
Copyright © Materials Research Society 2012

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References

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