Phonon- and electron-related far-infrared absorption in CdTe and ZnTe crystals
| Autor: | R. Brazis, D. Nausewicz, R. Raguotis |
|---|---|
| Rok vydání: | 2007 |
| Předmět: |
Photon
Condensed matter physics Absorption spectroscopy Chemistry Phonon Electron Condensed Matter Physics Population inversion Electronic Optical and Magnetic Materials Condensed Matter::Materials Science Far infrared Condensed Matter::Superconductivity Electric field Condensed Matter::Strongly Correlated Electrons Absorption (electromagnetic radiation) |
| Zdroj: | physica status solidi (b). 244:1662-1668 |
| ISSN: | 1521-3951 0370-1972 |
| Popis: | Constants characterising the efficiency of far-infrared (FIR) photon coupling to phonon sum and difference combination processes are elucidated from existing experimental data in CdTe and ZnTe crystals. Two-phonon difference processes are concluded to play leading role in the FIR absorption in the range of 1-4 THz. LO phonon band population inversion relative to LA band at the same phonon momentum is revealed in electric field acting on the conduction-band electrons using Monte Carlo method. Radiative decay of acumulated LO phonons and daughter TO and LA phonons is considered. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Plný text