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glossary
Merit factor ( acousto optic ): value depending on some physical parameters of a material and characterizing its acousto optic performances
Wavelength ( of a light wave ): distance between two consecutive identical states of the electric ( or magnetic ) field
Interaction length ( acousto optic ): in an acousto optic crystal, defines the length of the zone perpendicular to the direction of propagation of the acoustic wave in which the interaction between acoustic and light waves occurs
Interaction height ( acousto optic ): in an acousto optic crystal, defines the length of the zone parallel to the direction of propagation of the acoustic wave in which the interaction between acoustic and light waves occurs
Efficiency of an acousto optic: percentage of incident light intensity transferred into the diffracted wave
Acousto optic effect: diffraction of light in a material in which propagates an acoustic wave generating periodic variations in refractive index
