Optical lens assembly for generating super-chirality light field

Abstract

The invention relates to an optical lens assembly for generating a super-chirality light field and belongs to the application optics field. The assembly includes a cone beam reflector, a beam collimation block, an optical glass plate and a beam gathering block, wherein the incident light is a helically radially polarized beam. The proposed optical lens structure can regulate the propagation direction of the incident light, helical radially polarized beams are concentrated onto a central axis in a direction perpendicular to the central axis, and the super-chirality light field is achieved on the central axis.

Description

technical field [0001] The invention relates to the field of applied optics, in particular to an optical lens structure for generating a superchiral light field. Background technique [0002] In organisms, many important molecules, such as amino acids, proteins and nucleic acids, are chiral molecules. This type of molecule has the characteristic that the mirror image of the molecule and the molecule itself cannot be superposed on the three-dimensional structure. Therefore, chiral molecules must have two configurations that are mirror images of each other, and the molecules of these two configurations are called a pair of enantiomers. According to the direction of chirality, they can be defined as left-handed molecules and right-handed molecules. Typically, enantiomers have very different biological activities. During the research of therapeutic drugs, it is found that many medicinal molecules are chiral, and the efficacy of chiral drugs is very different, even one enantio...

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Problems solved by technology

Y.Tang et al reported in "Physical Review Letters" Vol.104, 2010, 163901 that two beams of circularly polarized light with opposite chiralities and opposite propagation directions are used to form a standing wave field, which can be generated at the nodes of the standing wave field Superchiral light field, but the thickness of the superchiral light field region is only 0.032 times the wavelength of light, which is not conducive to fixing chiral molecules in the superchiral light field region

At the same time, due to the relatively dispersed beam energy, it is not conducive to local measurement of chiral molecular samples

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