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Catastrophic Optical Bulk Damage – A New Failure Mode in High-Power InGaAs-AlGaAs Strained Quantum Well Lasers

Published online by Cambridge University Press:  01 June 2018

Yongkun Sin ,
Zachary Lingley ,
Talin Ayvazian ,
Miles Brodie  and
Neil Ives
Yongkun Sin*
Affiliation:
Electronics and Photonics Laboratory, The Aerospace Corporation, El Segundo, CA90245-4691
Zachary Lingley
Affiliation:
Electronics and Photonics Laboratory, The Aerospace Corporation, El Segundo, CA90245-4691
Talin Ayvazian
Affiliation:
Electronics and Photonics Laboratory, The Aerospace Corporation, El Segundo, CA90245-4691
Miles Brodie
Affiliation:
Electronics and Photonics Laboratory, The Aerospace Corporation, El Segundo, CA90245-4691
Neil Ives
Affiliation:
Electronics and Photonics Laboratory, The Aerospace Corporation, El Segundo, CA90245-4691
*
*(Email: [email protected])
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Abstract

High-power single-mode (SM) and multi-mode (MM) InGaAs-AlGaAs strained quantum well (QW) lasers with emission wavelengths of 910 − 980 nm are extensively used in various fiber lasers and amplifiers for both telecom and defense applications. In particular, underseas and satellite communication systems require stringent reliability from these lasers. Since these lasers predominantly fail by catastrophic and sudden degradation due to COD, it is crucial especially for space satellite applications to investigate reliability, failure modes, and degradation mechanisms of these lasers. Catastrophic optical mirror damage (COMD) was known to be the only failure mode until our group reported a new failure mode in MM and SM InGaAs-AlGaAs strained QW lasers in 2009 and 2016, respectively. Our group reported that bulk failure due to catastrophic optical bulk damage (COBD) has become the dominant failure mode of both SM and MM lasers. Since there have been limited reports on COBD compared to COMD, the intent of this paper is to introduce our studies on COBD that have spanned the last decade. We investigated reliability, failure modes, and degradation processes in SM and MM InGaAs-AlGaAs strained QW lasers by performing short-term step-stress tests and long-term accelerated life-tests as well as failure mode analyses using various nondestructive and destructive micro-analytical techniques including electron beam induced current (EBIC), time-resolved electroluminescence (EL), deep level transient spectroscopy (DLTS), focused ion beam (FIB), and high-resolution TEM. EBIC and EL techniques were employed to study dark line defects generated in degraded lasers stressed under different test conditions. Time-resolved EL techniques were employed to study initiation and progressions of dark spots and dark lines in real time as lasers were aged. DLTS techniques were employed to study electron traps in both pristine and degraded lasers. Lastly, FIB and high-resolution TEM were employed to prepare cross sectional and plan view TEM specimens to study DLD areas in post-aged lasers. We also report our current understanding on degradation mechanisms responsible for COBD in both SM and MM lasers.

Keywords

optoelectronicsemiconductingIII-Vdefectsscanning transmission electron microscopy (STEM)
Type
Articles
Information
MRS Advances , Volume 3 , Issue 57-58: Electronic and Photonic Materials , 2018 , pp. 3329 - 3345
Copyright
Copyright © Materials Research Society 2018 

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References

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