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Study of the Radiation-Hardness of VCSEL/PIN

Kock Kiam GAN
2010 Proceedings of 9th International Conference on Large Scale Applications and Radiation Hardness of Semiconductor Detectors — PoS(RD09)   unpublished

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The silicon trackers of the ATLAS experiment at the Large Hadron Collider (LHC) at CERN (Geneva) use optical links for data transmission. An upgrade of the trackers is planned for the Super LHC (SLHC), an upgraded LHC with ten times higher luminosity. We study the radiation-hardness of VCSELs (Vertical-Cavity Surface-Emitting Laser) and GaAs and silicon PINs using 24 GeV/c protons at CERN for possible application in the data transmission upgrade. The optical power of VCSEL arrays decreases
more » ... ficantly after the irradiation but can be partially annealed with high drive currents. The responsivities of the PIN diodes also decrease significantly after irradiation, but can be recovered by operating at higher bias voltage. This provides a simple mechanism to recover from the radiation damage.
doi:10.22323/1.098.0041 fatcat:tknlwn7trrdinl2rkiyxf4k4vm
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Kock Kiam GAN. "Study of the Radiation-Hardness of VCSEL/PIN." Proceedings of 9th International Conference on Large Scale Applications and Radiation Hardness of Semiconductor Detectors — PoS(RD09) (2010)