A study of facet degradation of InGaAs quantum well lasers is reported. We tune up a Raman and photoluminescence micro-probe technique for determining the crystal structure and the temperature profile of the cladding layer, in steps of approximately 1 micrometer, with a temperature resolution better than 1 degree Kelvin. The cladding layer composition and cross- section temperature profile have been monitored during operation. A clear correlation between the facet degradation and the type of protective coating is found.
|Autori interni:||SPAGNOLO, Vincenzo Luigi|
|Titolo:||Quantum-well-Laser mirror degradation investigated by micro-probe optical spectroscopy|
|Data di pubblicazione:||1995|
|Nome del convegno:||International Conference on Optical Diagnostics of Materials and Devices for Opto-, Micro-, and Quantum Electronics|
|Appare nelle tipologie:||4.1 Contributo in Atti di convegno|