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Updated: Nov 22, 2025

Fabrication of Silica Ultra High Quality Factor Microresonators

Fabrication of Silica Ultra High Quality Factor Microresonators

Published on: July 2, 2012

Ultra-low-loss on-chip zero-index materials.

Tian Dong¹, Jiujiu Liang¹, Sarah Camayd-Muñoz²

¹State Key Laboratory of Precision Measurement Technology and Instrument, Department of Precision Instrument, Tsinghua University, 100084, Beijing, China.

Light, Science & Applications

|January 8, 2021

Summary

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Researchers developed an ultra-low-loss zero-index metamaterial for perfect spatial coherence. This breakthrough enables large-area applications in optics by minimizing radiation loss.

Area of Science:

Photonics and Metamaterials
Integrated Optics

Background:

Zero-index materials enable perfect spatial coherence, crucial for applications like advanced waveguides and lasers.
Integrated Dirac-cone materials offer a promising platform but suffer from out-of-plane radiation losses.

Purpose of the Study:

To design an ultra-low-loss integrated Dirac-cone material.
To overcome the limitations of radiation loss in existing zero-index platforms.
To enable large-area applications of perfect spatial coherence.

Main Methods:

Designed a novel integrated Dirac-cone material using a square array of silicon pillars in silicon dioxide.
Achieved destructive interference of electromagnetic waves above and below the material to suppress radiation loss.
Utilized a standard planar fabrication process for easy manufacturing.

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Simulation, Fabrication and Characterization of THz Metamaterial Absorbers

Simulation, Fabrication and Characterization of THz Metamaterial Absorbers

Published on: December 27, 2012

Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source

Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source

Published on: April 4, 2017

Related Experiment Videos

Last Updated: Nov 22, 2025

Fabrication of Silica Ultra High Quality Factor Microresonators

Fabrication of Silica Ultra High Quality Factor Microresonators

Published on: July 2, 2012

Simulation, Fabrication and Characterization of THz Metamaterial Absorbers

Simulation, Fabrication and Characterization of THz Metamaterial Absorbers

Published on: December 27, 2012

Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source

Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source

Published on: April 4, 2017

Main Results:

Demonstrated an ultra-low-loss integrated zero-index material.
Successfully minimized out-of-plane radiation loss through destructive interference.
The material exhibits perfect spatial coherence over a large area.

Conclusions:

The developed material paves the way for practical, large-area applications of zero-index metamaterials.
This advancement is significant for linear, nonlinear, and quantum optics.
Easy fabrication using standard processes enhances its potential for widespread adoption.