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Implementation of a Reference Interferometer for Nanodetection

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Published on: April 26, 2014

Spectroscopy in Nanoscopic Cavities: Models and Recent Experiments.

Marc R Bourgeois¹, Feng Pan², C Praise Anyanwu¹

¹Department of Chemistry, University of Washington, Seattle, Washington, USA;

Annual Review of Physical Chemistry

|June 28, 2024

Summary

Nanophotonic cavities enhance light-matter interactions, enabling detection of weak optical signals and creating new optical matter states. This review covers spectroscopy of cavity-coupled systems across coupling regimes.

Keywords:

electron beam spectroscopy nanophotonic cavities optical spectroscopy strong coupling ultrastrong coupling weak coupling

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Area of Science:

Optics and Photonics
Materials Science
Quantum Chemistry

Background:

Nanophotonic cavities confine light to nanoscale dimensions.
This confinement enhances various optical responses, including molecular, excitonic, phononic, and plasmonic.
Weak spectroscopic signals can be detected at the single-particle level.

Purpose of the Study:

To review optical and electron beam spectroscopies of cavity-coupled material systems.
To discuss weak, strong, and ultrastrong coupling regimes.
To provide a theoretical basis and highlight experimental advances.

Main Methods:

Optical spectroscopy
Electron beam spectroscopy
Theoretical modeling of coupling regimes

Main Results:

Spectroscopic signatures of weak processes (absorption, Raman scattering) are detected at the single-particle limit.
Emergent polaritonic states of optical matter are realized.
Coupling material and photonic degrees of freedom across interaction strengths.

Conclusions:

Cavity-coupled systems offer powerful platforms for fundamental light-matter studies.
Advances in spectroscopy reveal new physics in weak, strong, and ultrastrong coupling.
Future research directions involve exploring novel polaritonic states and applications.