Laser‐induced acoustic phonon gratings in semiconductor thin films
| Autor: | E. W. Van Stryland, Alan Miller, Jun Wang, I. T. Muirhead, D. C. Hutchings, K. Lewis, K. R. Welford |
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| Rok vydání: | 1993 |
| Předmět: |
Materials science
genetic structures business.industry Phonon Physics::Optics General Physics and Astronomy Grating Condensed Matter::Mesoscopic Systems and Quantum Hall Effect Laser law.invention Standing wave Condensed Matter::Materials Science Optics law Condensed Matter::Superconductivity Excited state sense organs Thin film business Molecular beam Molecular beam epitaxy |
| Zdroj: | Journal of Applied Physics. 73:4746-4751 |
| ISSN: | 1089-7550 0021-8979 |
| DOI: | 10.1063/1.353838 |
| Popis: | Laser induced ultrasonic standing waves are observed in molecular beam deposited ZnSe thin films using the transient grating technique. This observation is attributed to a very short trapping time for single photon absorption in the band tail. The period of the standing wave is used to determine the acoustic phonon velocity in the ZnSe thin film which indicates that it is longitudinal acoustic phonons which are excited. |
| Databáze: | OpenAIRE |
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