Computer-controlled laser radiation wavelength meter based on the Fizeau interferometer

A description is given of a computer-controlled wavelength meter designed for the 500–650 nm range. It consists of four Fizeau interferometers, multichannel photodetectors with a control system, and a microcomputer. The resolution of this instrument is 10⁷. The minimum detectable energy is 0.1 mJ. It can deal with continuous and pulsed laser radiation.