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Related Experiment Video

Updated: Jan 16, 2026

Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities

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Published on: November 30, 2012

Purcell Effect in Epsilon-Near-Zero Microcavities.

Ali Panahpour¹, Jussi Kelavuori¹, Mikko Huttunen¹

¹Photonics Laboratory, Physics Unit, Tampere University, FI-33014 Tampere, Finland.

|October 6, 2025

Summary

This summary is machine-generated.

All-dielectric epsilon-near-zero (ENZ) Bragg microcavities provide an ultralow-loss platform for enhanced light-matter interactions. These ENZ cavities exhibit unique scaling laws for Purcell and quality factors, crucial for integrated photonics.

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Last Updated: Jan 16, 2026

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Published on: April 26, 2014

Area of Science:

Photonics and Nanotechnology
Quantum Optics
Materials Science

Background:

Epsilon-near-zero (ENZ) photonics enables novel functionalities in integrated photonic systems.
Practical ENZ devices face limitations due to high material losses and impedance mismatch.
Conventional ENZ resonators struggle with efficient light manipulation and light-matter interaction.

Purpose of the Study:

To demonstrate all-dielectric Bragg-reflection microcavities as an ultralow-loss platform for ENZ applications.
To explore the potential of Bragg cavities as ENZ resonant microcavities.
To investigate and establish scaling laws for Purcell and quality factors in ENZ Bragg cavities.

Main Methods:

Analytical derivations using Fermi's golden rule and field quantization in lossless dispersive media.
Investigation of Purcell effect and quality factor in all-dielectric ENZ Bragg microcavities.
Frequency domain simulations to validate theoretical findings and compare with metallic/PEC counterparts.

Main Results:

All-dielectric ENZ Bragg microcavities offer an ultralow-loss platform for enhanced light-matter interaction.
Purcell and quality factors in these ENZ cavities scale as L/λ₀ and (L/λ₀)³, respectively.
Established unique scaling laws distinguishing ENZ cavities from conventional resonators.

Conclusions:

All-dielectric ENZ Bragg microcavities overcome limitations of traditional ENZ devices.
These structures provide a promising avenue for enhanced light-matter interactions in nonlinear and quantum photonics.
The findings offer crucial insights for designing next-generation ENZ-based photonic systems.