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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: Jun 22, 2026

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

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Published on: November 30, 2012

Dispersion-guided resonances in two-dimensional photonic-crystal-embedded microcavities.

Kevin Tsia, Andrew Poon

    Optics Express
    |June 3, 2009
    PubMed
    Summary

    We studied resonance guiding in 2D photonic-crystal microcavities. Simulations show high-Q modes appear as frequency nears the band edge or lattice size grows.

    Area of Science:

    • Photonics
    • Optical Engineering
    • Materials Science

    Background:

    • Photonic-crystal-embedded microcavities (PCEMs) offer unique optical properties.
    • Guiding resonances in these structures is crucial for device applications.

    Purpose of the Study:

    • To analyze dispersion-based guiding of resonances in 2D PCEMs.
    • To investigate factors influencing the quality factor (Q) of these resonances.

    Main Methods:

    • Utilized 2D finite-difference time-domain (FDTD) simulations.
    • Analyzed waveguide side-coupled PCEMs with square lattices of air holes.
    • Mapped Fourier transforms of mode-field distributions to the photonic crystal dispersion surface.

    Main Results:

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    Stimulated Stokes and Antistokes Raman Scattering in Microspherical Whispering Gallery Mode Resonators
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    Published on: April 4, 2016

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    Last Updated: Jun 22, 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

    Fabrication of 1-D Photonic Crystal Cavity on a Nanofiber Using Femtosecond Laser-induced Ablation
    13:02

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

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    Stimulated Stokes and Antistokes Raman Scattering in Microspherical Whispering Gallery Mode Resonators

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  • Identified high-Q quasi-periodic multimodes within the first photonic crystal band.
  • Observed Q factor increases by orders of magnitude near the band-edge frequency.
  • Demonstrated Q factor enhancement with increasing lattice dimension.
  • Showed mode k-vectors and group velocities align near the GammaM direction.

    • Conclusions:

    • Dispersion-based guiding effectively controls resonances in 2D PCEMs.
    • Band-edge proximity and lattice size are key parameters for enhancing Q factors.
    • Understanding mode propagation near GammaM is vital for PCEM design.