Optical Vortex Generator and Analysis

Capable of Measuring Optical Vortex Dichroism

Overview

Circular dichroism (CD) is the differential absorption of right- and left-circularly polarized light in chiral materials. Unlike ordinary circular polarization, optical vortices carry orbital angular momentum (OAM) with a topological charge that assumes many integer values. This enables “optical vortex dichroism,” a new technique potentially offering richer material and chirality analysis than standard CD.
However, conventional vortex generators allow only low-frequency switching, making sensitive vortex-based measurements difficult due to noise.
By achieving high-frequency (^~50kHz) switching of vortex handedness, inventor’s method enables precise, noise-resistant measurements, unlocking new opportunities for discovering material properties and chiral signatures beyond conventional techniques.

Features・Outstandings

Product Application

・Optical vortex generator, material analysis instrument

IP Data

IP No.　 ： Not published
Inventor ： TANAKA Yoshito, HASHIYADA Shun
keyword ： Optical vortex, Dichroism, Spectral measurement, Analysis methods, Analytical equipment, Optical vortex dichroism, Circular dichroism