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Updated: Jun 8, 2026

Fabrication and Operation of a Nano-Optical Conveyor Belt
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Improving optical confinement in nanostructures via external mode coupling.

Q H Song1, H Cao

  • 1Department of Applied Physics, Yale University, New Haven, Connecticut 06520, USA.

Physical Review Letters
|September 28, 2010
PubMed
Summary
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We show how to create long-lived resonances in nanostructures by coupling them externally. This method significantly increases light storage lifetime through destructive interference, enabling new nanoscale photonic devices.

Area of Science:

  • Photonics
  • Nanotechnology
  • Optical Physics

Background:

  • Open nanostructures offer unique optical properties but often suffer from short light-matter interaction times.
  • Controlling light confinement and lifetime in nanoscale systems is crucial for advanced photonic applications.

Purpose of the Study:

  • To demonstrate the formation of long-lived resonances in open nanostructures using external coupling.
  • To investigate the mechanism behind lifetime enhancement in coupled nanorod systems.
  • To explore potential applications in nanoscale photonic devices.

Main Methods:

  • Utilizing three dielectric nanorods or strips as the open nanostructure.
  • Inducing external coupling of optical modes by precisely tuning the spacing between nanorods.

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Last Updated: Jun 8, 2026

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Published on: August 26, 2015

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Fabrication of 1-D Photonic Crystal Cavity on a Nanofiber Using Femtosecond Laser-induced Ablation

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  • Analyzing the resulting changes in resonance lifetime and light leakage.

    • Main Results:

    • Achieved an order of magnitude increase in resonance lifetime through external coupling.
    • Demonstrated that destructive interference of optical fields minimizes light leakage, leading to enhanced lifetimes.
    • Confirmed the formation of long-lived resonances in the coupled nanostructure system.

    Conclusions:

    • External coupling is an effective strategy for enhancing light storage in nanostructures.
    • The demonstrated technique provides a pathway for developing novel nanoscale photonic devices.
    • Minimizing light leakage via destructive interference is key to achieving long-lived optical resonances.