Blue‐green injection lasers containing pseudomorphic Zn1−xMgxSySe1−ycladding layers and operating up to 394 K
| Autor: | J. M. Gaines, R. R. Drenten, John Petruzzello, P. M. Mensz, Kevin W. Haberern, T. Marshall |
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| Rok vydání: | 1993 |
| Předmět: |
Materials science
Physics and Astronomy (miscellaneous) business.industry Physics::Optics Heterojunction Cladding (fiber optics) Laser Semiconductor laser theory law.invention Condensed Matter::Materials Science Optics Optical coating law Optoelectronics business Lasing threshold Current density Quantum well |
| Zdroj: | Applied Physics Letters. 62:2462-2464 |
| ISSN: | 1077-3118 0003-6951 |
| DOI: | 10.1063/1.109319 |
| Popis: | We describe the performance of blue‐green injection lasers containing Zn1−xMgxSySe1−y cladding layers. The devices have yielded the lowest reported threshold current densities (500 A/cm2) and the highest reported pulsed output powers (500 mW) at room temperature. Lasing has been observed at temperatures as high as 394 K. The room temperature and 85 K lasing wavelengths are 516 and 496 nm, respectively. The use of Zn1−xMgxSySe1−y, instead of ZnSzSe1−z, cladding layers provides a clear improvement in optical confinement, demonstrated by the widening of the far‐field pattern in the direction perpendicular to the layers. The lasers are separate‐confinement heterostructures with a ZnS0.06Se0.94 waveguiding region and a single Cd0.2Zn0.8Se strained quantum well. The entire structure is pseudomorphic with the GaAs substrate. |
| Databáze: | OpenAIRE |
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