Low-dimensional materials are of great interest to both theorists and experimentalists, owing
to their novel electronic properties which arise mainly because of a host of quantum …

We provide an in-depth treatment of the various mechanisms by which an incident light
beam can produce an intensity-or flux-dependent change in the refractive index and …

We report correlated-electron calculations of optically excited states in ten semiconducting
single-walled carbon nanotubes with a wide range of diameters. Optical excitation occurs to …

Two-photon absorption spectra (2PA) of a series of conjugated dimers and the
corresponding monomer were studied in the near-IR region. All of the dimers show very …

A unified microscopic theoretical framework for the calculation of optical excitations in
molecular and semiconductor materials is presented. The hierarchy of many-body density …

We have measured the quadratic electroabsorption (EA) spectrum of a variety of soluble
luminescent and nonluminescent π-conjugated polymer films in the spectral range of 1.5 …

In the last decade, much progress has been made in these materials. This book presents a
highly coherent coverage of supramolecular, photosensitive and electroactive materials …

We have measured the full two-photon absorption (TPA) spectrum in the transparency range
of single-crystal polydiacetylene paratoluene-sulfonate (PTS) using z scan. The spectrum …

The evolution with increasing Coulomb correlations of a semiconductor to a magnetic
insulator is related to an excited-state crossover in π-electron models for conjugated …

Within a model Hamiltonian with variable on-site and long-range Coulomb interactions
between the π electrons for poly (para-phenylenevinylene), we conduct a thorough search …