Abstract

We report the development of a simple method for eliminating coherent background noise and fluctuations from saturation-spectroscopy signals. With this technique, which we believe will also be effective in two-photon and other types of nonlinear spectroscopy, we have routinely observed background-free saturation signals in I2 at 514.5 nm with signal-to-noise ratios within an order of magnitude of the fundamental quantum limit.

© 1980 Optical Society of America

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Corrections

J. J. Snyder, R. K. Raj, D. Bloch, and M. Ducloy, "High-sensitivity nonlinear spectroscopy using a frequency-offset pump: erratum," Opt. Lett. 5, 326-326 (1980)
https://www.osapublishing.org/ol/abstract.cfm?uri=ol-5-7-326

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