Electrooptical Chromophores for Nonlinear Optical and Photorefractive Applications

1999

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

1996

Highly transparent and birefringent chromophores for organic photorefractive materials

1999

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

1997

Nondipolar Structures With Threefold Symmetry For Nonlinear Optics

1997

Design and Optimization of Chromophores for Liquid Crystal and Photorefractive Applications

1999

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.