This paper deals with recent and important developments in the field of organic materials for
second-order nonlinear optics. Attention is drawn to current trends in chromophore design …

Various inorganic and organometallic complexes exhibiting quadratic nonlinear optical
(NLO) properties (ie, linearly correlated to the square of the electric field E 2) are reviewed …

We investigate the influence of an external, static electric field upon the relationship between
the structure, spatial distribution of electron density, and linear and nonlinear polarizabilities …

A new class of chromophores has been fabricated that features both electron-releasing and
electron-withdrawing groups fused via an intervening ethynyl moiety to the carbon …

Reversible switching of quadratic NLO responses can be achieved in organic and metallo‐
organic molecular compounds by application of various external stimuli. Strategies for the …

Although chemists, biochemists, biologists, and material scientists are often interested in
using nonlinear optical techniques for characterizing their samples, they seldom have the …

We describe the theoretical basis for the exceptionally large molecular first
hyperpolarizabilities inherent to (5, 15-diethynylporphinato) metal-bridged donor− acceptor …

Isotopic (δ17O and δ18O) measurements of stratospheric and mesospheric carbon dioxide
(CO2) and oxygen (O2), along with trace species concentrations (N2O, CO, and CO2), were …

Molecular switches: Highly efficient acido‐and photoswitchable frequency doublers (see
scheme) based on the indolinooxazolidine core are studied by means of hyper‐Rayleigh …

Nonlinear optical chromophores can be organized as orientationally correlated side groups
of polymers with a rigid backbone. In such an organization, each chromophore contributes …