Modified Z-scan techniques for investigations of nonlinear chiroptical effects

Modified Z-scan techniques for investigations of nonlinear chiroptical effects.

We present simple modifications of the classic Z-scan technique for the investigations of nonlinear chiroptical effects, i.e. nonlinear circular birefringence and two-photon circular dichroism. Two methods for studying these effects: a "polarimetric Z-scan" and a "polarization modulated Zscan" are described in detail. These techniques were applied to estimate the order of magnitude of the effec...

Nonlinear Optical Investigation of Biochemical Analytes in Blood Serum via Z-Scan Technique

Background and Aims: Biomolecules' optical and nonlinear optical properties are widely used for different medical diagnoses and applications in biophotonic devices. These properties are essential in studying biological processes in living tissues. Aside from biomolecules' linear optical characteristics, their nonlinear optical characteristics have lately been considered. Materials and Methods:...

Measurement of The Nonlinear Refractive Index by Z-scan Technique

In this seminar the third-order nonlinear optical phenomena are described. The emphasis is on the nonlinear refractive index n2. We describe the Z-scan technique, which is a simple method to determine n2. At the end we show how Z-scan method can be used to examine protein concentration in human blood.

Z-scan study of nonlinear absorption in reduced LiNbO3 crystals

Chiroptical Probes ACationic Zinc Porphyrin as a Chiroptical Probe for Z-DNA**

DNA is a polymorphic polymer that can adopt a variety of secondary structures ranging from the canonical right-handed B form to the left-handed Z conformation. The latter conformation is less common than the right-handed B-DNA because under physiological conditions Z-DNA has a higher energy. Although the biological role of Z-DNA still remains to be clarified, it has recently been inferred that ...