Abstract
The Rayleigh-type surface acoustic wave piezoexcitation induced by the interband absorption of laser pulses in CdS1−xSex crystal placed in a dc electric field was investigated. We detected the surface acoustic wave (SAW) pulses with a profile of the particles’ vibrational velocity consisting of three consequent phases and we observed nonlinear (logarithmic) increase of the SAW amplitude with the increase of laser intensity. Our experiments directly demonstrated that the efficiency of SAW laser-induced piezoexcitation is more than 4 orders of magnitude higher than the efficiency of SAW laser-induced thermoelastic generation.
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