Abstract

A simple Lloyd’s mirror interferometer and a CCD photodiode array make a compact Fourier transform wavemeter for pulsed lasers. A transformation from the nonlinear spatial sampling of the diodes to a linear temporal series is described that sharpens the distribution in the spectral domain and permits long diode arrays to be used in the interferometer. Tests with a tunable red dye laser show that the wavemeter has an accuracy of ~ 2 cm−1 and the sensitivity to record untuned superradiant emission from the dye as well as frequency doubling in the ultraviolet.

© 1992 Optical Society of America

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