Acousto-optic modulator in typical installation. ON and OFF states are illustrated. 
   1 – input beam
   2, 9 – focusing lenses
   3 – optically transparent material (the angled side prevents sound wave reflection and formation of a standing wave)
   4 – sound absorptive material
   5 – ultrasonic running wave
   6 – piezoelectric crystal, which converts electrical signal to the sound wave
   7 – zero order of diffraction
   8 – non-zero orders of diffraction (they exist only when the sound wave is present)
   10 – modulated output beam

    11 – aperture
File:Acoustooptic modulator-en.svg by Ximeg
Translated into Kannada language by user:vidyu44