METRICON 2010/M MODEL PRISM COUPLER
The Metricon Prism coupler was developed in 1980 and is the easiest and most accurate refractive index measuring instrument used in more than 1,000 sets of universities, research institutes, and companies in over 40 countries around the world.
No advance knowledge or modeling of samples required
Little/no sample preparation required, no coupling fluids
Easy to use with flexible samples
HOW IT WORKS: THIN FILM
The refractive index and thickness of the sample are measured from the angle and loss of light when the light is not totally reflected on the contact surface of the prism and the thin film and proceeds inside the film.
HOW IT WORKS: BULK MATERIAL
For bulk samples, the refractive index is calculated by measuring the critical angle θc between prism and sample.