19005 Debye-Sears Effect (Ultrasonic Experiment Set 5)

Debye-Sears Effect (Ultrasonic Experiment Set 5) Introduction to acousto-optics and the use of continuously emitted ultrasonic waves as well as visualization of a standing ultrasonic field using laser light The devices and materials in this experiment set enable experiments to introduce acousto-optics and the use of continuously emitted ultrasonic waves (CW - continuous wave). The focus is on the Debye-Sears effect and the imaging of a standing ultrasonic wave field using laser light. Using the CW generator SC600, ultrasonic waves of different frequencies can be generated in a water bath. The ultrasonic waves behave like the elements of an optical grating, the grating constant of which depends on the wavelength of the ultrasound. When parallel laser light passes through it, it is diffracted. This creates a classic diffraction pattern, the Debye-Sears effect. By using different ultrasonic frequencies as well as red and green laser light, the dependence of the distance between the diffra