Nonlinear Optics Of Polydiacetylenes
There has been remarkable progress in the fundamental understanding and applications of polydiacetylenes since the initial report of their third order nonlinearities in the mid 1970s. The early device work of Sasaki and his colleagues stimulated research into multi-photon absorption effects. Detailed measurements on single crystal PTS showed that two photon absorption was very large and was instrumental in defining the spectral windows in which all-optical switching devices could be effectively used. New methodologies for crystal growth and polymerization have been developed which improved the optical quality of the crystals to the point that a rather rare event in nonlinear optics, namely four photon absorption could be measured. The four photon coefficient was surprisingly large, probably due to a resonant three photon enhancement of four photon absorption.
Molecular Crystals and Liquid Crystals Science and Technology Section B: Nonlinear Optics
Number of Pages
Article; Proceedings Paper
Source API URL
Stegeman, G. I.; Liu, M.; and Polyakov, S., "Nonlinear Optics Of Polydiacetylenes" (2000). Scopus Export 2000s. 728.