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glossary

Rise time ( acousto optic ): time it takes for the acoustic wave to run through the beam width
Acousto optic effect: diffraction of light in a material in which propagates an acoustic wave generating periodic variations in refractive index
Acousto optic modulator: optical modulator using acousto optic effect
Gaussian beam: beam with a gaussian distribution of intensity in the plane perpendicular to the direction of propagation - fundamental transverse mode of a laser