Electro-optic effect of liquid crystal
Experiment contents and related subjects;
Observe the impact on polarized light caused by liquid crystal box and measure the twist angle and contrast ratio of liquid crystal.
Understand the working principle of liquid crystal and working conditions, measure the response time of liquid crystal.
Understand the working principle of photodiode.
Measure the diffraction angle of liquid crystal box, observe and measure the the polarization properties of diffraction light.
Estimate the structure size of liquid crystal materials.
Verify the Mauls`s law.
Features of the instrument
Using semiconductor laser as the light source (650nm, 4mW).
The adjust range of the drive power voltage of liquid crystal is 2-12V.
The ang of the digital laser power meter is 200μW, 2mW, 20mW 200 mW and the tunable range respectively.
The limiting aperture of polarized disc is 27mm.
Complete set of equipment
Optical experiment guide, semiconductor laser, polarizer, liquid crystal cell, liquid crystal drive power, photodiode, laser power indicator and etc..