Effective-mass superlattice as an injector in quantum cascade lasers
| Autor: | Igor A. Sukhoivanov, Rainer Michalzik, Oleksiy V. Shulika, Mykhailo Klymenko, I.M. Safonov |
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| Rok vydání: | 2007 |
| Předmět: |
education.field_of_study
Materials science business.industry Superlattice Population Injector Laser Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials law.invention Semiconductor laser theory Effective mass (solid-state physics) Cascade law Quantum mechanics Physics::Accelerator Physics Optoelectronics Electrical and Electronic Engineering Quantum cascade laser business education |
| Zdroj: | Optical and Quantum Electronics. 40:197-204 |
| ISSN: | 1572-817X 0306-8919 |
| DOI: | 10.1007/s11082-007-9153-x |
| Popis: | In this paper, we have developed new design of the injector for quantum cascade structures based on the effective mass superlattice. The transmission spectra of the conventional injector and effective-mass injector have been compared. Advantage of the effective-mass injector is more uniform spectrum of pass-band. This feature allows to improve controllability of the quantum cascade laser, to increase stability of its operation and to decrease sensitivity to noise in applied voltage bias. Also, we have computed geometrical parameters for effective-mass injector which is appropriate to provide inverted population in existing quantum-cascade lasers. Such injector should be characterized by 15–25 numbers of layers with widths of layers up to 2 nm. |
| Databáze: | OpenAIRE |
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