Acousto-optic effect experiment of liquid
Experiment contents and related subjects:
Observe he diffraction phenomenon of ultrasonic grating in liquid and measure the diffraction efficiency.
Understand the interaction mechanism between the sound wave and light wave in liquid, project the speed of sound in liquid.
The modulation, transmission and demodulation of analog signal (audio).
The relationship between modulating frequency and driving frequency (specific annexes are needed).
Features of the instruments:
Different non--corrosive liquids such as pure water, salt, etc. may be used to observe the diffraction phenomenon.
The sound wave frequency of acousto-optic modulator(AOM) drive power is 9-11MHz
A 12 steps light probe combined with an one-dimensional displacement planes are used to measure the light intensity distribution: the accuracy of lateral movement of 0.002mm.
 Complete set of equipment
 Optical experiment guide, semiconductor laser, liquid acousto-optic accessories + one-dimensional slider, big one-dimensional displacement planes +12 steps light probe, drive power of acousto-optic modulator, lens, laser power indicator and etc..