Mid-infrared phase modulation via Stark effect on intersubband transitions in GaAs/GaAlAs quantum wells
| Autor: | Michel Papuchon, Emmanuel Dupont, D. Delacourt |
|---|---|
| Rok vydání: | 1993 |
| Předmět: |
Physics
Kramers–Kronig relations Condensed matter physics Phase (waves) Condensed Matter::Mesoscopic Systems and Quantum Hall Effect Condensed Matter Physics Atomic and Molecular Physics and Optics Gallium arsenide Amplitude modulation symbols.namesake chemistry.chemical_compound Stark effect chemistry Dispersion relation symbols Electrical and Electronic Engineering Atomic physics Phase modulation Quantum well |
| Zdroj: | IEEE Journal of Quantum Electronics. 29:2313-2318 |
| ISSN: | 0018-9197 |
| DOI: | 10.1109/3.245560 |
| Popis: | Mid-infrared ( approximately 10 mu m) electrorefractive effects of intersubband transitions in step GaAs/GaAlAs quantum wells are experimentally analyzed. A method for studying infrared electrorefraction of a two-dimensional structure via the Stark effect is used. The anomalous dispersion is measured over the entire spectral range of the transition and is found to be consistent with the Kramers-Kronig relations in the case of a Lorentzian absorption shape. A solution of Maxwell's equations in the multiquantum well structure is detailed and leads to a good agreement with experimental data. A standard interferometer and a lock-in technique allow a quasi-direct determination of phase and amplitude modulation with very good sensitivity. A theoretical approach based on a Lorentzian model and the solution of Maxwell's equations for a multiple QW (quantum well) structure agreed well with the data. > |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|