Abstract
The influence of 60Co-irradiation accompanied by low-temperature treatment on AlGaAs/GaAs chips of 835 ± 25 nm superluminescent diodes (SLD) is addressed. It is shown that irradiation of potentially unreliable chips with latent defects in active 20-nm layer increases optical power degradation rate during the subsequent burn-in test. The possible cause of enhanced degradation of potentially unreliable chips during a long-term operation or gamma-ray irradiation is the presence of local defects, which can be rearranged into larger clusters commensurate with the active layer. The decrease in the degradation rate during the burn-in test for irradiated reliable chips probably caused by the mechanical stresses relaxation and its homogenization. A method for rejecting unreliable chips using gamma irradiation processing is proposed.
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Lagov, P.B., Maslovsky, V.M. (2019). Detection of Unreliable Superluminescent Diode Chips Using Gamma-Irradiation. In: Pogrebnjak, A.D., Novosad, V. (eds) Advances in Thin Films, Nanostructured Materials, and Coatings. Lecture Notes in Mechanical Engineering. Springer, Singapore. https://doi.org/10.1007/978-981-13-6133-3_30
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DOI: https://doi.org/10.1007/978-981-13-6133-3_30
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