Selection rule for Raman spectra of two-dimensional materials using circularly-polarized vortex light
Journal
Physical Chemistry Chemical Physics
Journal Volume
23
Journal Issue
32
Start Page
17271
End Page
17278
ISSN
14639084
14639076
Date Issued
2021
Author(s)
Abstract
Conservation of spin and orbital angular momenta of circularly-polarized vortex light is discussed for Raman spectra of two-dimensional materials. We first show the selection rule for optical absorption of two-dimensional materials as a function of the spin and orbital angular momentum of incident vortex light. In the case of two-dimensional materials, the Raman tensor for the incident vortex light does not change the symmetry of the phonon mode. Furthermore, the Raman active modes are classified by either "helicity-changing"or "helicity-conserved"Raman modes, in which the scattered photon of circularly polarized light either changes or does not change the helicity of the light, respectively. We show tables of selection rules for the Raman active modes of two-dimensional materials with 2, 3, 4, and 6 rotational symmetry for vortex light.
Subjects
Angular Momentum
Circular Polarization
Light Absorption
Raman Scattering
Circularly Polarized
Circularly Polarized Light
Orbital Angular Momentum
Raman Active Modes
Rotational Symmetries
Scattered Photons
Selection Rules
Two-dimensional Materials
Vortex Flow
Article
Phonon
Photon
SDGs
Publisher
Royal Society of Chemistry
Type
journal article