Phase and amplitude modulation based on intersubband transitions in electron transfer double quantum wells
| Autor: | Nakita Vodjdani, V. Berger, Emmanuel Dupont, Michel Papuchon, D. Delacourt |
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| Rok vydání: | 1993 |
| Předmět: |
Physics and Astronomy (miscellaneous)
Condensed matter physics Condensed Matter::Other Chemistry Phase (waves) Condensed Matter::Mesoscopic Systems and Quantum Hall Effect Molecular physics Amplitude modulation Wavelength Modulation Absorption (electromagnetic radiation) Phase modulation Refractive index Quantum well |
| Zdroj: | Applied Physics Letters. 62:1907-1909 |
| ISSN: | 1077-3118 0003-6951 |
| DOI: | 10.1063/1.109539 |
| Popis: | We present an experimental study of the intersubband electroabsorption and electrorefraction of a coupled asymmetrical quantum well structure. The field induced carrier transfer from a wide well to a narrow well yields interesting electro‐optical properties. For instance, we found a particular wavelength region where a strong phase modulation is associated with a low absorption modulation. We verified that the measurements of the correlated phase and amplitude modulation were consistent with Kramers–Kronig transformations of experimental differential absorption spectra. |
| Databáze: | OpenAIRE |
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