Low threshold 3 μm interband cascade 'W' laser
Autor: | Igor Vurgaftman, Rui Q. Yang, William W. Bewley, S. J. Murry, Jerry R. Meyer, D. Zhang, Christopher L. Felix, C.H. T. Lin, Shin-Shem Pei, Edward H. Aifer |
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Rok vydání: | 1998 |
Předmět: |
Photon
business.industry Chemistry Slope efficiency Interband cascade laser Condensed Matter Physics Laser Electronic Optical and Magnetic Materials Semiconductor laser theory law.invention Cascade law Materials Chemistry Optoelectronics Electrical and Electronic Engineering Atomic physics business Quantum cascade laser Lasing threshold |
Zdroj: | Journal of Electronic Materials. 27:77-80 |
ISSN: | 1543-186X 0361-5235 |
Popis: | We have demonstrated the operation at λ ≈ 3.0 μm of a 22-stage interband cascade laser with a “W” active region for enhanced gain. The threshold current density for a ridge structure is 170 A/cm2 at 80K, and it remains lower than the best reported intersubband quantum cascade laser results at all T up to the maximum lasing temperature of 225K. At T = 100K, peak output powers up to 532 mW are observed, and the slope of 342 m W/A per facet for high injection levels corresponds to a differential quantum efficiency of 1.6 photons emitted for every injected electron. |
Databáze: | OpenAIRE |
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