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Updated: May 21, 2025
08:04
Excitonic Hamiltonians for Calculating Optical Absorption Spectra and Optoelectronic Properties of Molecular Aggregates and Solids
Published on: May 27, 2020
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Born-Kuhn coupled oscillator model for optical activity in ordered media.
Razvigor Ossikovski1, Oriol Arteaga2
1LPICM, CNRS, Ecole Polytechnique, Institut Polytechnique de Paris, 91128 Palaiseau, France. razvigor.ossikovski@polytechnique.edu.
Nanoscale
|March 20, 2025
Summary
This study presents a unified framework for optical activity using the Born-Kuhn coupled oscillator model. This model efficiently derives gyration and permittivity tensors for molecules and crystals based on structural parameters.
Area of Science:
- Physics
- Materials Science
- Chemistry
Background:
- Optical activity describes how materials rotate polarized light.
- Phenomenological electromagnetic descriptions are crucial for understanding optical phenomena.
- The Born-Kuhn model offers a classical approach to coupled oscillators.
Purpose of the Study:
- To establish a unified formal framework for describing optical activity.
- To derive gyration and permittivity tensors for ordered media using a specific model.
- To parameterize these tensors using molecular and structural properties.
Main Methods:
- Utilizing the phenomenological electromagnetic description of optical activity.
- Applying the classic Born-Kuhn coupled oscillator model.
- Deriving gyration and permittivity tensors from configurational and structural parameters.
Main Results:
- A unified formal framework for optical activity is established.
- Gyration and permittivity tensors are efficiently parameterized.
- Born-Kuhn molecular models for all optically active crystal classes are developed.
Conclusions:
- The Born-Kuhn model provides an effective method for parameterizing optical properties.
- This framework unifies the description of optical activity in molecules and crystals.
- The developed models are applicable to all optically active crystal classes.
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