There are many different physical phenomena that involve both sound and light. In photoacoustics, sounds are created by very short pulses of laser light impinging on materials. Through holographic interferometry and fiber optic sensors, light can be used to measure and visualize sound. Sound can also have an influence on light, for example when an acousto-optic modulator (AOM) is used to shift the frequency of light. However, perhaps the most interesting and most baffling interaction between sound and light is the phenomenon known as sonoluminescence.

-Sonoluminescence