We report quantitative measurements of the effects of a phase-diffusing field on coherent transients when the detected signals are averaged over many shots. Experiments were made at a millimeter wavelength, and frequency fluctuations were simulated by deliberately applying a well-defined random Stark field to the gaseous sample: This permits a separate adjustment of the amplitude and the rate of fluctuations. In the case of slow frequency fluctuations, two- and three-pulse-induced photon echoes clearly exhibit a reversible behavior that is closely related to the definite shape of the frequency-autocorrelation function.
© 1986 Optical Society of America
Frangois Rohart, "Photon echoes induced by a phase-diffusing field: experimental evidence of a reversible behavior," J. Opt. Soc. Am. B 3, 622-627 (1986)