Recent developments in high resolution saturation spectroscopy obtained by means of acousto-optic modulators

Publisher Website
Google Scholar
Abstract
We present three applications of acousto-optic modulators to high resolution saturation spectroscopy. — First, an A/O modulator is used to improve both frequency and amplitude stabilization of Ar+ lasers outside the laser resonator. — Second, a new technique to detect saturation resonances is demonstrated. In this method the saturation beam is both frequency shifted and modulated and the induced modulation of the probe beam is detected resulting in a highly improved signal to noise ratio and a high degree of background cancellation. — Third, an auxiliary A/O modulator is used for line shape studies with a single laser