Electrooptical Chromophores for Nonlinear Optical and Photorefractive Applications

Guanidyl and phosphoraniminyl substituents: New electron donors in second-order nonlinear optical chromophores

Highly transparent and birefringent chromophores for organic photorefractive materials

Abstract A series of chromophores for application in organic photorefractive (PR) materials is investigated by electro-optical absorption measurements (EOAM). This experimental technique yields information on the transition dipole moment μ ag , the ground-state dipole moment μ g , and the change of the dipole moment upon optical excitation Δ μ within the intense charge transfer (CT) band of the dyes. It is shown that the results of the EOAM experiment allow us to estimate the PR figures-of-merits (FOMs) of the chromophores by either perturbational two-level equations or Kramers–Kronig transformation. In particular, chromophores based on the heterocyclic dihydropyran and dihydropyridine grou…

Dipolar NLO-phores with large off-diagonal components of the second-order polarizability tensor

Nondipolar Structures With Threefold Symmetry For Nonlinear Optics

Design and Optimization of Chromophores for Liquid Crystal and Photorefractive Applications

ABSTRACTOrganic chromophores have been exploited for a wide range of discrete optical and electronic functions as well as a growing number of combined opto-electronic functions. We are pursuing development of organic and polymer materials for a range of applications that require properties including liquid crystallinity, second order optical nonlinearity, photorefractivity and, more recently, special nonlinear optical behavior involving molecular chirality.