High power conversion efficiencies and scaling issues for multimode vertical-cavity top-surface-emitting lasers
| Autor: | S.P. Kilcoyne, S.A. Chalmers, Kevin L. Lear |
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| Rok vydání: | 1994 |
| Předmět: |
Materials science
Multi-mode optical fiber Equivalent series resistance business.industry Energy conversion efficiency Semiconductor device Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials Semiconductor laser theory Optics Optoelectronics Electrical and Electronic Engineering business Lasing threshold Scaling Quantum well |
| Zdroj: | IEEE Photonics Technology Letters. 6:778-781 |
| ISSN: | 1941-0174 1041-1135 |
| Popis: | We report advances in the power conversion efficiencies of vertical-cavity top-surface-emitting lasers defined by proton implantation. Efficiencies as high as 13.4% and 15.8% have been obtained for single-mode and multimode operation, respectively. Scaling issues are addressed including the size dependence of threshold current, series resistance, lasing output power, and power conversion efficiency. We find that devices between 15 /spl mu/m and 25 /spl mu/m diameters show the highest power conversion efficiency due to the threshold current not scaling with the conductance and output power. Device geometries with contact apertures both equal to and less than (overlapping) the active region diameter were investigated. > |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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