Abstract
In this paper a multiple strained layer structure with multiple quantum wells as a piezoelectric transducer is proposed for generating and detecting nano ultrasound waves with nanometer wavelength and tera hertz frequency. By inducing femtosecond optical pulses at this strained structure, internal piezoelectric field is changed. As a result longitudinal acoustic phonon oscillations can be treated as nano acoustic waves. It could be noticed in simulated cases that detection of nano ultrasound waves can be used in non destructive testing and high accuracy measurements with this structure. It is also shown that the MQW structure design how influences in generated nano acoustic waves.
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Kaviani, B., Sadr, A. & Abrishamifar, A. Generation and detection of nano ultrasound waves with a multiple strained layer structure. Opt Quant Electron 40, 577–586 (2008). https://doi.org/10.1007/s11082-008-9246-1
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DOI: https://doi.org/10.1007/s11082-008-9246-1