Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6946813 | Microelectronics Reliability | 2015 | 4 Pages |
Abstract
Pump laser diodes emitting at 980Â 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 980Â 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.
Related Topics
Physical Sciences and Engineering
Computer Science
Hardware and Architecture
Authors
J. Michaud, G. Pedroza, L. Béchou, L.S. How, O. Gilard, D. Veyrié, F. Laruelle, S. Grauby,