| Popis: |
Acousto-optics deals with the interaction of sound and light. When an acoustic wave propagates in an optically transparent substrate, it produces a periodic modulation of the index of refractions through the elasto-optical effect. This creates a moving phase grating which may diffract portions of input laser light into one or more directions, and is known as acousto-optic diffraction. This phenomena is a base for various devices, such as: deflectors, modulators, frequency shifters, filters, etc. |
