MICHAUD, J.; PEDROZA, G.; BÉCHOU, L.; HOW, L.S.; GILARD, O.; VEYRIÉ, D.; LARUELLE, F.; GRAUBY, S.

doi:10.1016/j.microrel.2015.06.068

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http://creativecommons.org/licenses/by-nc-sa/

MICHAUD, J.
Laboratoire Ondes et Matière d'Aquitaine [LOMA]

PEDROZA, G.
ALPhANOV

BÉCHOU, L.
Laboratoire de l'intégration, du matériau au système [IMS]

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Microelectronics Reliability. 2015-08, vol. 55, n° 9-10, p. 1746-1749

Elsevier

Resumen en inglés

Pump laser diodes emitting at 980 nm are typically used in distribution network transmission systems and are now implemented in space missions for intra-satellite communication links and calibration systems. Nevertheless, since the pump source is potentially a critical point for such systems, there is a huge need to assess their reliability in space environment, especially in terms of operation under vacuum conditions. We have then studied the electro-optical behavior of several 980 nm laser diodes and shown that they may degrade more rapidly when submitted to a vacuum environment. Then, spatially resolved temperature variations have been measured by thermoreflectance on the laser diode front facet and have shown a temperature variation increase under vacuum conditions, in particular near the emission region, where a catastrophic optical damage is most likely to occur. This temperature variation increase could then be one of the causes for the more rapid laser diode degradation.< Leer menos

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Laser diode

Thermal mapping

Thermoreflectance

Electro-optical characterization

Vacuum

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Investigations on electro-optical and thermal performances degradation of high power density GaAs-based laser diode in vacuum environment

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