Optical transition radiation in presence of acoustic waves
arXiv:0912.4111 · doi:10.1142/S0217984910025000
Abstract
Transition radiation from relativistic electrons is investigated in an ultrasonic superlattice excited in a finite thickness plate. In the quasi-classical approximation formulae are derived for the vector potential of the electromagnetic field and for the spectral-angular distribution of the radiation intensity. The acoustic waves generate new resonance peaks in the spectral and angular distribution of the radiation intensity. The heights of the peaks can be tuned by choosing the parameters of the acoustic wave.
arXiv comment10 pages, 5 figures, discussion on the dependence of the acoustic wave amplitude is added