Acousto-optics
（重定向自Acoustooptics）
![A diffraction image showing the acousto-optic effect.](/Images/godic/202412/19/Beugungsbild2847.jpg")
![An acousto-optic modulator](/Images/godic/202412/19/Acousto-optic_Modulator2847.png")
![Photometer](/Images/godic/202412/19/Photometer2848.jpg")
![Wellengitterbild](/Images/godic/202412/19/Wellengitterbild2848.jpg")
Acousto-optics is a branch of physics that studies the interactions between sound waves and light waves, especially the diffraction of laser light by ultrasound (or sound in general) through an ultrasonic grating.