Experimental observation of the interference of three-and five-wave mixing processes in optical second harmonic generation in a solution of bacteriorhodopsin

Publisher Website
Google Scholar
Abstract
The generation of a femptosecond second harmonic in a bacterior-hodopsin solution is investigated. It is shown that the behavior of the harmonic can be explained by the coherent interference of several contributions from three-and five-wave mixing processes (χ (2) and χ (4)). The magnitude and phase of the fourth-order electronic susceptibility χ (4) of the medium with respect to χ (2) are determined.