A wavelength meter capable of measuring the absolute wavelength of pulsed laser radiation to 1 part in 106 is described. It consists of five Fizeau, or optical-wedge, interferometers. The fringes from a standard (He–Ne) and an unknown laser are captured by a television camera interfaced with a microcomputer that calculates the wavelength.
© 1981 Optical Society of America
Original Manuscript: August 28, 1981
Published: December 1, 1981
L.-S. Lee and A. L. Schawlow, "Multiple-wedge wavemeter for pulsed lasers," Opt. Lett. 6, 610-612 (1981)