Photo from wikipedia
Abstract In this work, we investigate the role of the electron blocking layer (EBL) in laser diodes based on a graded index separate confinement heterostructure. We compare two sets of… Click to show full abstract
Abstract In this work, we investigate the role of the electron blocking layer (EBL) in laser diodes based on a graded index separate confinement heterostructure. We compare two sets of devices with very different EBL aluminum composition (3% and 12%) and design (graded and superlattice). The results of electro-optical characterization of these laser diodes reveal surprisingly modest role of electron blocking layer composition in determination of the threshold current and the differential efficiency values. However, EBL structure influences the operating voltage, which is decreased for devices with lower EBL and superlattice EBL. We observe also the differences in the thermal stability of devices – characteristic temperature is lower for lasers with 3% Al in EBL.
Journal Title: Superlattices and Microstructures
Year Published: 2018
Link to full text (if available)
Share on Social Media: Sign Up to like & get
recommendations!