Fourth-Order Interference on Polarization Beats with Phase-Conjugation Geometry
- 1 March 2000
- journal article
- Published by IOP Publishing in Chinese Physics Letters
- Vol. 17 (3) , 206-208
- https://doi.org/10.1088/0256-307x/17/3/018
Abstract
The effect of fourth-order coherence on ultrafast modulation spectroscopy (UMS) with phase-conjugation geometry (PCUMS) in a cascade three-level system is investigated using chaotic and phase-diffusion models. It has been found that the modulation terms of the beat signal depend on the second-order coherence function, and different stochastic models of the laser field affect only the fourth-order coherence function. The difference between the PCUMS and UMS is discussed from a physical viewpoint.Keywords
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