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.
Become a member or log in to view the full text of this article.
OSA Members get the full text of Optics & Photonics News, plus a variety of other member benefits.