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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:
The Colloidal State01:29

The Colloidal State

The formation of a colloidal system is exemplified by an aqueous solution containing Cl− ions is introduced to another containing Ag+ ions, resulting in the precipitation of solid AgCl as extremely tiny crystals. Instead of settling out as a filterable precipitate, these crystals remain suspended in the liquid, showcasing a colloidal system.A colloidal system involves colloidal particles within the approximate range of 1 to 1000 nm in at least one dimension, dispersed in a medium called the...

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Related Experiment Video

Updated: Jun 4, 2026

Synthesis and Operation of Fluorescent-core Microcavities for Refractometric Sensing
08:12

Synthesis and Operation of Fluorescent-core Microcavities for Refractometric Sensing

Published on: March 13, 2013

Low order modes in microcavities based on silicon colloids.

E Xifré-Pérez1, R Fenollosa, F Meseguer

  • 1Centro de Tecnologías Físicas, Unidad Asociada CSIC-UPV, Universidad Politécnica de Valencia, Avda Tarongers s/n, 46022, Valencia, Spain.

Optics Express
|March 4, 2011
PubMed
Summary
This summary is machine-generated.

Silicon colloids were used to create microcavities for optical applications. These microcavities offer tunable resonances and potential for sensing, demonstrating a promising strategy for advanced optical devices.

More Related Videos

Fabrication of Silica Ultra High Quality Factor Microresonators
07:51

Fabrication of Silica Ultra High Quality Factor Microresonators

Published on: July 2, 2012

Related Experiment Videos

Last Updated: Jun 4, 2026

Synthesis and Operation of Fluorescent-core Microcavities for Refractometric Sensing
08:12

Synthesis and Operation of Fluorescent-core Microcavities for Refractometric Sensing

Published on: March 13, 2013

Fabrication of Silica Ultra High Quality Factor Microresonators
07:51

Fabrication of Silica Ultra High Quality Factor Microresonators

Published on: July 2, 2012

Area of Science:

  • Materials Science
  • Optics and Photonics

Background:

  • Microcavities are crucial for controlling light-matter interactions.
  • Silicon's high refractive index offers advantages for optical confinement.

Purpose of the Study:

  • To synthesize and optically characterize silicon colloid-based microcavities.
  • To investigate the tunability of resonances and electric field distributions.
  • To evaluate parameters like quality factor (Q) and effective mode volume (V) for sensing and high-performance applications.

Main Methods:

  • Synthesis of silicon colloids with sphere sizes ranging from 1 to 3 micrometers.
  • Optical characterization of the synthesized microcavities.
  • Calculation of key optical parameters including Q factor, effective mode volume, and evanescent field.

Main Results:

  • Successfully synthesized silicon colloid microcavities.
  • Observed tunable resonances with low mode indices, exhibiting electric field distributions similar to electronic orbitals.
  • Calculated parameters indicate potential for both sensing applications (large evanescent fields) and high Q/V ratios (order of 10^9(λ/n)^(-3)).

Conclusions:

  • Silicon colloid microcavities represent a viable strategy for developing advanced optical devices.
  • These microcavities can support coexisting optical modes suitable for sensing and high-performance photonic applications.