- Instrument Introduction
The acousto-optic effect refers to the phenomenon of diffraction that occurs when light passes through a medium perturbed by ultrasonic waves; this phenomenon results from the interaction between light waves and sound waves within the medium. The acousto-optic effect provides an effective means of controlling the frequency, direction, and intensity of a laser beam. Acousto-optic devices fabricated using this effect, such as acousto-optic modulators, acousto-optic deflectors, and tunable filters, have important applications in laser technology, optical signal processing, and integrated optical communication technology.
- Experiment Objectives
1. Understand the mechanism of the acousto-optic effect
2. Understand the principle of Bragg diffraction
3. Observe Bragg diffraction and measure the diffraction angle
4. Calculate the speed of sound using the acousto-optic effect