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Related Concept Videos

Standing Waves in a Cavity01:28

Standing Waves in a Cavity

A household microwave and lasers are examples of standing electromagnetic waves in a cavity. When two conducting metal plates are placed parallel at the nodal planes, it creates a cavity where standing waves are formed. The cavity between the two planes is analogous to a stretched string held at the points x = 0 and x = L. Here, the distance 'L' between the two planes must be an integer multiple of half of the wavelength. The wavelengths that satisfy this condition are given by:

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Related Experiment Video

Updated: May 25, 2026

Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities
11:08

Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities

Published on: November 30, 2012

Wave-guided optical waveguides.

D Palima1, A R Bañas, G Vizsnyiczai

  • 1DTU Fotonik, Dept. of Photonics Engineering, Technical University of Denmark, DK-2800, Kgs. Lyngby, Denmark.

Optics Express
|February 15, 2012
PubMed
Summary
This summary is machine-generated.

Researchers created optically manipulated microstructures with integrated waveguides using two photon polymerization (2PP). These freestanding waveguides can be precisely oriented, enhancing light confinement and potentially overcoming the diffraction limit for subwavelength applications.

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Area of Science:

  • Optics and Photonics
  • Microfabrication
  • Nanotechnology

Background:

  • Optical manipulation of microstructures is crucial for advanced photonic devices.
  • Existing methods often lack precise control over orientation and light manipulation.
  • Bridging the diffraction limit requires novel approaches in light focusing and delivery.

Purpose of the Study:

  • To fabricate and demonstrate optically steerable microstructures with integrated waveguides.
  • To investigate the manipulation of light direction and numerical aperture enhancement.
  • To explore the potential of optically trapped microstructures for subwavelength light delivery.

Main Methods:

  • Two photon polymerization (2PP) for microfabrication of complex structures.
  • Optical trapping techniques for precise manipulation and orientation control.
  • Integration of optical waveguides within the microstructures.
  • Numerical simulations and experimental validation using a BioPhotonics Workstation.

Main Results:

  • Successfully fabricated freestanding waveguides that can be positioned at any orientation using optical traps.
  • Demonstrated a marked increase in numerical aperture and controlled redirection of incident light.
  • Showcased the ability of optically steered waveguides to generate tightly confined light at their tips.
  • Validated simulation results with experimental data.

Conclusions:

  • Optically trapped, microfabricated structures offer a novel paradigm for light manipulation.
  • This approach can potentially overcome the diffraction barrier, enabling subwavelength light delivery.
  • The developed technique opens new avenues for exploiting far-field optics in the subwavelength domain.
  • This technology has implications for advanced photonic devices and nanoscale applications.