Year-end Sale % OFF 
Abstract
We report on a novel organic chromophore with symmetric twistedintramolecular charge transfer (TICT) state on excitation. Theproperties of nonlinear transmission induced by three-photon absorption(3 PA) are demonstrated pumped with nanosecond laser pulse. Large 3 PAcross sections as high as the order of 10−74 cm6s2 havebeen obtained for nanosecond and picosecond laser pulses at 1064 nmfrom intensity-dependent transmission measurements. Similar two emissivebehaviours from one-photon and three-photon excited fluorescence spectraindicate that the linear and nonlinear fluorescences share the same TICTrelaxation process from the excited states. The intensity dependence ofupconversion fluorescence on the incident intensity obeys the cubic lawthat characterizes the three-photon absorption.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
