Photopiezoelectric induction of resonant acoustic waves in semi-insulating gallium arsenide single crystals.
- Resource Type
- Article
- Authors
- Mitrokhin, V.; Rembeza, S.; Antonov, R.
- Source
- Semiconductors. Dec2011, Vol. 45 Issue 12, p1550-1554. 5p.
- Subject
- *GALLIUM arsenide semiconductors
*PIEZOELECTRICITY
*SINGLE crystals
*OSCILLATIONS
*ELASTICITY
*SOUND waves
*ELECTRIC conductivity
*OPTOELECTRONIC devices
- Language
- ISSN
- 1063-7826
The effect of resonant acoustic wave excitation in semi-insulating gallium-arsenide single crystals is investigated by means of light pulses. The peak amplitude of excited elastic oscillations is observed in a temperature range, where small values of the internal friction and electrical conductivity of the semiconductor take place simultaneously. The effect is related to the inverse piezoelectric conversion of the bulk-photovoltage energy into the mechanical deformation of the semiconductor crystal. The results of the investigations can be used for designing semiconductor photodetectors with high modulation-frequency selectivity. [ABSTRACT FROM AUTHOR]