Photoexcited elastic waves in free-standing GaAs films
| Autor: | Daniel Gammon, Brian H. Houston, A. S. Bracker, Samuel G. Carter, M. Zalalutdinov, Douglas M. Photiadis |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Coupling
Range (particle radiation) Materials science business.industry Phonon Physics::Optics 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences High strain Condensed Matter::Materials Science Semiconductor 0103 physical sciences Femtosecond Optoelectronics Electronics 010306 general physics 0210 nano-technology business Excitation |
| Zdroj: | Physical Review B. 101 |
| ISSN: | 2469-9969 2469-9950 |
| DOI: | 10.1103/physrevb.101.245304 |
| Popis: | The ability to generate transversely propagating elastic waves on free-standing semiconductor films in the 10+ GHz frequency range is a critical element in the effort to achieve phonon-based coupling to on-chip electronic devices. The results of this joint experimental and theoretical study show that such phonons are created by the excitation of free-standing optically subwavelength thickness GaAs films with highly focused femtosecond optical pulses. With sufficiently high strain levels, this approach could become enabling for applications in nano-optomechanics. |
| Databáze: | OpenAIRE |
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