Highly reliable AlGaAs semiconductor lasers with both facets dry-etched

Abstract
Both cavity facets of AlGaAs semiconductor lasers were fabricated using a reactive ion beam etching (RIBE) technique. The etched mirror's reflectivity is estimated to be 0.24 and its scattering loss 0.15. Both facets dry-etched lasers at 70°C heat block temperature and 5mW light output power showed no remarkable deterioration for over 3500 h.

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