Refractive Index Measurements using a CCD

Area of Science:

• Optics and Photonics
• Materials Science

Background:

• Accurate measurement of the refractive index is crucial for characterizing optical materials.
• Traditional methods like the minimum-deviation technique can be time-consuming and require specialized equipment.

Purpose of the Study:

• To develop and validate a rapid and precise method for determining the refractive index.
• To utilize a charge-coupled device (CCD) camera and laser beam profiler in the Brewster's angle experiment.

Main Methods:

• Employed the Brewster's angle experiment setup.
• Utilized a CCD camera and laser beam profiler for precise angle measurement.
• Analyzed reflected laser beam profiles to identify Brewster's angle.

Main Results:

• Successfully isolated Brewster's angle with high accuracy, limited by the sample rotation stage resolution.
• Achieved measurement uncertainties comparable to the standard minimum-deviation technique.
• Demonstrated the efficiency and speed of the CCD-based method.

Conclusions:

• The CCD camera and laser beam profiler method offers a viable and accurate alternative for refractive index measurement.
• This technique simplifies the experimental procedure and enhances measurement speed.
• The findings support the adoption of this method in optical characterization.