What is types of interferometer?

1. Mach-Zehnder interferometers: This type of interferometer divides a beam of light into two paths using semi-transparent mirrors. The beam recombines at the end of both paths, creating interference patterns that can be measured.

2. Michelson interferometers: Michelson interferometers also use semi-transparent mirrors to split and recombine a beam of light. However, the mirrors are arranged in a specific way to create fringes that correspond to the difference in length of the two paths.

3. Fabry-Perot interferometers: A Fabry-Perot interferometer consists of two semi-transparent mirrors parallel to each other. Light entering the cavity is reflected back and forth between the mirrors, causing interference patterns to be produced.

4. Sagnac interferometers: Sagnac interferometers utilize a rotating platform to split a beam of light into two paths, which travel in opposite directions around a ring. The difference in phase between the two beams creates an interference pattern that can be measured.

5. Fizeau interferometers: This type of interferometer uses a beam splitter and a mirror to divide and recombine a beam of light. The mirror has a small imperfection, causing the light to reflect back in different angles and creating an interference pattern.

6. Twyman-Green interferometers: Twyman-Green interferometers are commonly used in manufacturing and quality control. They use a beam splitter and several mirrors to create a system where the test object is passed through an interferometry system and the interference patterns are produced and analyzed.