Experimental System for Acousto-Optic Effect

This acousto-optic effect experiment system is designed to study the interaction between acoustic waves and light waves in isotropic media. It enables students to investigate Bragg diffraction, acousto-optic modulation, diffraction efficiency, ultrasound propagation, and optical communication principles. The system demonstrates the fundamental concepts of acousto-optic interaction and provides a practical platform for experiments in optics, optical communication, and optical information processing. An optional digital dual-channel oscilloscope can be used for real-time waveform visualization. Physics Lab Experiments from Atico Exports.

Experiments :

• Observe Bragg Diffraction and Measure the Bragg Diffraction Angle.
• Display the Acousto-Optic Modulation Waveform.
• Observe the Acousto-Optic Deflection Phenomenon.
• Measure Acousto-Optic Diffraction Efficiency and Bandwidth.
• Measure the Propagation Velocity of Ultrasound Waves in the Medium.
• Demonstrate Optical Communication Using Acousto-Optic Modulation Technique.

He-Ne Laser Output :

• <1.5 mW @ 632.8 nm

LiNbO₃ Crystal :

• X-surface gold-plated electrode
• Flatness: < λ/8 @ 633 nm
• Transmittance range: 420–520 nm

Polarizer :

• Optical aperture: Ø16 mm
• Wavelength range: 400–700 nm
• Polarization degree: 99.98%
• Transmittance: 30% (parallel)
• Transmittance: 0.0045% (vertical)

Detector :

• PIN photocell

Power Unit :

• Output sine wave modulation amplitude: 0–300 V, continuously adjustable
• Output DC bias voltage: 0–600 V, continuously adjustable
• Output frequency: 1 kHz

Optical Rail :

• 1 m
• Aluminum