1. Thermal Behavior of High Power GaAs-Based Laser Diodes in Vacuum Environment
- Author
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Laurent Bechou, François Laruelle, Jérémy Michaud, Stefan Dilhaire, David Veyrie, Stéphane Grauby, Laboratoire Ondes et Matière d'Aquitaine (LOMA), Université de Bordeaux (UB)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'intégration, du matériau au système (IMS), Université Sciences et Technologies - Bordeaux 1-Institut Polytechnique de Bordeaux-Centre National de la Recherche Scientifique (CNRS), Centre National d’Études Spatiales [Paris] (CNES), and 3S Photonics
- Subjects
Facet (geometry) ,Materials science ,Physics::Optics ,02 engineering and technology ,7. Clean energy ,01 natural sciences ,Temperature measurement ,law.invention ,Semiconductor laser theory ,010309 optics ,020210 optoelectronics & photonics ,Optics ,law ,unpumped window ,0103 physical sciences ,Thermal ,Vacuum environment ,0202 electrical engineering, electronic engineering, information engineering ,Electrical and Electronic Engineering ,Diode ,Catastrophic optical damage ,[PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics] ,Laser diode ,laser diode ,business.industry ,Laser ,Atomic and Molecular Physics, and Optics ,Electronic, Optical and Magnetic Materials ,Optoelectronics ,business ,facet temperature variation - Abstract
International audience; Since 980-nm GaAs-based laser diodes are now implemented in space missions, there is a huge need to study their thermal behavior under vacuum in order to evaluate their reliability. Then spatially resolved temperature variations have been evaluated by thermoreflectance on the front facet under atmospheric and vacuum conditions, and for two different unpumped windows lengths. We show that, in all cases, vacuum induces a front facet temperature variation increase of the laser diodes, making them more sensitive to a catastrophic optical damage.
- Published
- 2016