scholarly journals OPTICAL TRANSITION RADIATION IN PRESENCE OF ACOUSTIC WAVES

2010 ◽  
Vol 24 (27) ◽  
pp. 2693-2703 ◽  
Author(s):  
A. R. MKRTCHYAN ◽  
V. V. PARAZIAN ◽  
A. A. SAHARIAN
Keyword(s):  
Electromagnetic Field ◽  
Angular Distribution ◽  
Radiation Intensity ◽  
Acoustic Waves ◽  
Transition Radiation ◽  
Optical Transition ◽  
Finite Thickness ◽  
Relativistic Electrons ◽  
Quasi Classical Approximation ◽  
Optical Transition Radiation

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.

scholarly journals OPTICAL TRANSITION RADIATION IN PRESENCE OF ACOUSTIC WAVES FOR AN OBLIQUE INCIDENCE

2012 ◽  
Vol 26 (06) ◽  
pp. 1250036 ◽  
Author(s):  
A. R. MKRTCHYAN ◽  
V. V. PARAZIAN ◽  
A. A. SAHARIAN
Keyword(s):  
Acoustic Waves ◽  
Oblique Incidence ◽  
Transition Radiation ◽  
Optical Transition ◽  
Finite Thickness ◽  
Angular Distributions ◽  
Relativistic Electrons ◽  
Quasi Classical Approximation ◽  
Approximation Formulas ◽  
Optical Transition Radiation

Forward transition radiation is considered in an ultrasonic superlattice excited in a finite thickness plate under oblique incidence of relativistic electrons. We investigate the influence of acoustic waves on both the intensity and polarization of the radiation. In the quasi-classical approximation, formulas are derived for the vector potential of the electromagnetic field and for the spectral-angular distribution of the radiation intensity. It is shown that the acoustic waves generate new resonance peaks in the spectral and angular distributions. The heights and the location of the peaks can be controlled by choosing the parameters of the acoustic wave. The numerical examples are given for a plate of fused quartz.

Optical transition radiation of relativistic electrons in amorphous quartz

2010 ◽  
Vol 45 (4) ◽  
pp. 181-182
Author(s):  
A. G. Mkrtchyan ◽  
A. A. Aslanyan ◽  
Z. G. Amirkhanyan ◽  
V. R. Kocharyan ◽  
A. E. Movsisyan
Keyword(s):  
Transition Radiation ◽  
Optical Transition ◽  
Relativistic Electrons ◽  
Optical Transition Radiation ◽  
Amorphous Quartz
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