Ageing Tests of Radiation Damaged Lasers and Photodiodes for the CMS Tracker Optical Links

The effects of thermally accelerated ageing in irradiated and unirradiated 1310nm InGaAsP edge-emitting lasers and InGaAs p-i-n photodiodes are presented. 40 lasers ( 20 irradiated) and 30 photodiodes ( 19 irradiated) were aged for 4000 hours at 80¡C. Periodic measurements were made of laser thresh...

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Detalles Bibliográficos
Autores principales: Gill, K, Azevedo, C S, Batten, J, Cervelli, G, Grabit, R, Jensen, F, Troska, Jan K, Vasey, F
Lenguaje:eng
Publicado: 1999
Materias:
Detectors and Experimental Techniques
Acceso en línea:http://cds.cern.ch/record/687160
Descripción
Sumario:The effects of thermally accelerated ageing in irradiated and unirradiated 1310nm InGaAsP edge-emitting lasers and InGaAs p-i-n photodiodes are presented. 40 lasers ( 20 irradiated) and 30 photodiodes ( 19 irradiated) were aged for 4000 hours at 80¡C. Periodic measurements were made of laser threshold and efficiency, and p-i-n leakage current and photocurrent. There were no sudden failures and there was very little wearout related degradation in either unirradiated or irradiated sample groups. The results suggest that the tested devices have a sufficiently long lifetime to operate for at least 10 years inside the CMS Tracker despite being exposed to a harsh radiation environment.

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