Optical properties of δ-doped doping superlattices
| Autor: | E.F. Schubert |
|---|---|
| Rok vydání: | 1990 |
| Předmět: |
Photoluminescence
Materials science Dopant business.industry Superlattice Doping Physics::Optics Surfaces and Interfaces Condensed Matter::Mesoscopic Systems and Quantum Hall Effect Condensed Matter Physics Laser Molecular physics Surfaces Coatings and Films law.invention Condensed Matter::Materials Science law Condensed Matter::Superconductivity Materials Chemistry Optoelectronics Stimulated emission business Absorption (electromagnetic radiation) Excitation |
| Zdroj: | Surface Science. 228:240-246 |
| ISSN: | 0039-6028 |
| DOI: | 10.1016/0039-6028(90)90301-n |
| Popis: | Optical absorption and photoluminescence experiments are performed on GaAs doping superlattices, which have δ-function-like doping profiles of alternating n- and p-type dopant sheets. Absorption and photoluminescence spectra reveal the clear signature of quantum-confined interband transitions. The peaks of the experimental absorption and luminescence spectra are assigned to calculated energies of quantum-confined transitions with very good agreement. Tunable, stimulated emission of radiation is achieved in doping superlattices. The tuning range of the n-i-p-i laser is 35 A and is achieved by inhomogeneous optical excitation of the Fahry-Perot cavity. |
| Databáze: | OpenAIRE |
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