Abstract
The two-photon absorption (TPA) spectrum of 4-(N,N diethylamino)-β-nitrostyrene (DEANST) crystal has been characterized in the 760−1300 nm spectral range. It presents a broad (∼7000 cm-1) absorption band that cannot be described by any molecular resonance. In particular, it does not display the strong molecular TPA resonance that is due to the internal charge-transfer transition. Davydov splittings as large as 5400 cm-1 are observed in the linear absorption spectrum. Thus, dipole coupling between transition dipole moments are very strong in DEANST crystal. The linear and nonlinear absorption spectra are analyzed using the framework of Frenkel-Davydov exciton theory.
Sign-in/Register to access full text options 
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.
