Excited State Enhancement of Nonlinear Optical Properties

In the search for efficient materials for all-optical photonic devices based on the third order optical susceptibility X(3), organic and polymeric materials are being intensely investigated because nonresonant virtual excitation of the delocalized π-electron systems of these materials can result in large ultrafast nonlinear optical responses with minimal background absorption. We have recently shown through theoretical and experimental studies that x(3)(-ω4;ω1,ω2,ω3) can be increased by orders of magnitude over the normally observed ground state values by population of electronic excited states.

Access to the full text of this article is restricted. In order to view this article please log in.

Add a Comment