The past decade has witnessed the emergence of new measurement approaches and
applications for chiral thin films and materials enabled by the observations of the high …

A simplifying treatment is developed for describing the molecular origins of electric dipole
allowed sum-frequency generation (SFG) and second harmonic generation (SHG). The full …

Nonlinear optics is a mature field characterized by a wealth of phenomena that are well
understood. The microscopic origins of these phenomena are known to be in the quantum …

Recent observations of remarkably large chiroptical effects in second‐harmonic generation
(SHG) and sum‐frequency generation (SFG) measurements suggest exciting possibilities for …

The theory of molecular nonlinear optics based on the sum-over-states (SOS) model is
reviewed. The interaction of radiation with a single wtpisolated molecule is treated by first …

The synthesis of several new truxenones and one tris (dicyanomethylene) derivative
substituted by different amines at positions 4, 9, and 14 is reported. A complete …

The first hyperpolarizability of several Λ-like chromophores including Malachite Green and
Brilliant Green were measured by means of Kleinman-disallowed hyper-Rayleigh (harmonic …

Macromolecular interactions were demonstrated to yield large chiroptical effects in second
harmonic generation measurements of ultrathin surface films. Second harmonic generation …

Organic molecules at the gas-particle interface of atmospheric aerosols influence the
heterogeneous chemistry of the aerosol and impact climate properties. The ability to probe …

Several mono-and di-substituted triazine derivatives are synthesized. Their molecular first
hyperpolarizability (β) and absorption properties are determined. The observed trends in the …