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 diffraction orders on the acoustic and optical wavelength can be shown. If divergent laser light is used, a direct optical projection of the acoustic wave field can be carried out. With the help of an absorber mat , the differences between progressive and standing ultrasonic waves can be demonstrated. By adding a photodiode receiver , the set can be expanded to an ultrasonic resonance cell. This is mainly used for concentration measurements. SCOPE OF DELIVERY: Item No. Designation 20100 CW Generator SC600 20200 Debye-Sears set 20211 Laser module (green) 20223 Lid for AOM sample tray 20225 AOM sample tray 20227 Absorber mat 20230 Projection lens   POSSIBLE EXPERIMENTS: PHY11 Debye-Sears effect PHY12 Projection of standing waves   EXTENSIONS PROPOSALS: Item No. Designation for trial 20302 20303 Adjustable mirror , photodiode receiver IND04 Concentration measurement with resonance cell 20301 20302 20303 Beam splitter , 2 adjustable mirrors , 2 photodiode receivers PHY17 Acousto-optical modulation of standing ultrasonic waves 10351 Hydrophone set with BNC connector PHY19 Phase and group velocity 20212 Laser module (blue) PHY11 PHY12 Debye-Sears effect