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Proceedings Paper

Accelerated-aging tests of radiation-damaged lasers and photodiodes for the CMS tracker optical links
Author(s): Karl A. Gill; Carlos Simoes Azevedo; Jeremy Batten; Giovanni Cervelli; Robert Grabit; Fredrik B. H. Jensen; Jan Troska; Francois Vasey
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Paper Abstract

The combined effects of radiation damage and accelerated ageing in COTS lasers and p-i-n photodiodes are presented. Large numbers of these devices will be employed in future High Energy Physics experiments and it is vital that these devices are confirmed to be sufficiently robust in terms of both radiation resistance and reliability. Forty 1310 nm InGaAsP edge-emitting lasers (20 irradiated) and 30 InGaAs p-i-n photodiodes (19 irradiated) were aged for 4000 hours at 80 degree(s)C with periodic measurements made of laser threshold and efficiency, in addition to 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 Compact Muon Solenoid experiment despite being exposed to a harsh radiation environment.

Paper Details

Date Published: 7 December 1999
PDF: 7 pages
Proc. SPIE 3872, Photonics for Space and Radiation Environments, (7 December 1999); doi: 10.1117/12.373285
Show Author Affiliations
Karl A. Gill, CERN--European Lab. for Particle Physics (Switzerland)
Carlos Simoes Azevedo, CERN--European Lab. for Particle Physics (Switzerland)
Jeremy Batten, Imperial College of Science, Technology and Medicine (United Kingdom)
Giovanni Cervelli, CERN--European Lab. for Particle Physics (Switzerland)
Robert Grabit, CERN--European Lab. for Particle Physics (Switzerland)
Fredrik B. H. Jensen, CERN--European Lab. for Particle Physics (Switzerland)
Jan Troska, Imperial College of Science, Technology and Medicine (Switzerland)
Francois Vasey, CERN--European Lab. of Particle Physics (Switzerland)


Published in SPIE Proceedings Vol. 3872:
Photonics for Space and Radiation Environments
Edward W. Taylor; Francis Berghmans, Editor(s)

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