Authors:

Declan Harrison Vasil

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About Paper:

Chirality, or the inability of an object to be superimposed onto its mirror image, is a key property in the characterization of many molecules and biological systems. However, traditional methods of chiral characterization have suffered from poor signal-to-noise ratios and low spatial resolution. Second Harmonic Generation Circular Dichroism (SHG-CD) offers up to three orders of magnitude increased sensitivity in chiral measurements over conventional absorbance circular dichroism and works label-free in both chiral structures and disordered media. Many different factors can contribute to SHG-CD based on physical conditions, and based on these conditions, many different models have been proposed to describe various contributions to SHG-CD. This research focuses on the collection of these models, as well as the proposal of new theoretical structures, in order to provide a comprehensive framework for the determination of dominant driving interactions and quantitative evaluation. Keywords: Second Harmonic Generation; Circular Dichroism; Linear Birefringence; Hyper-Rayleigh Scattering; Nonlinear Optics

Source:

Purdue University / 2025

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Co-authors:

Declan Harrison Vasil