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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:
Double Resonance Techniques: Overview01:12

Double Resonance Techniques: Overview

Double resonance techniques in Nuclear Magnetic Resonance (NMR) spectroscopy involve the simultaneous application of two different frequencies or radiofrequency pulses to manipulate and observe two distinct nuclear spins. One important application of double resonance is spin decoupling, which selectively suppresses coupling with one type of nucleus while observing the NMR signal from another nucleus, simplifying the spectrum and enhancing resolution.
Spin decoupling is usually achieved by...
Sound Waves: Resonance01:14

Sound Waves: Resonance

Resonance is produced depending on the boundary conditions imposed on a wave. Resonance can be produced in a string under tension with symmetrical boundary conditions (i.e., has a node at each end). A node is defined as a fixed point where the string does not move. The symmetrical boundary conditions result in some frequencies resonating and producing standing waves, while other frequencies interfere destructively. Sound waves can resonate in a hollow tube, and the frequencies of the sound...
Characteristics of Series Resonant Circuit01:24

Characteristics of Series Resonant Circuit

Series resonance occurs in a circuit containing inductive (L), capacitive (C), and resistive (R) elements connected sequentially. At the resonance frequency, the inductive and capacitive reactances are equal in magnitude but opposite in sign, effectively canceling each other. This causes the circuit's impedance is minimal, primarily determined by the resistance R. The resonant frequency of an RLC circuit is defined as:
Resonance and Hybrid Structures02:16

Resonance and Hybrid Structures

According to the theory of resonance, if two or more Lewis structures with the same arrangement of atoms can be written for a molecule, ion, or radical, the actual distribution of electrons is an average of that shown by the various Lewis structures.
Resonance Structures and Resonance Hybrids
The Lewis structure of a nitrite anion (NO2−) may actually be drawn in two different ways, distinguished by the locations of the N–O and N=O bonds.
Parallel Resonance01:23

Parallel Resonance

The parallel RLC circuit is an arrangement where the resistor (R), inductor (L), and capacitor (C) are all connected to the same nodes and, as a result, share the same voltage across them. The parallel RLC circuit is analyzed in terms of admittance (Y), which reflects the ease with which current can flow. The admittance is given by:

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Related Experiment Video

Updated: May 18, 2026

Microwave Photonics Systems Based on Whispering-gallery-mode Resonators
12:18

Microwave Photonics Systems Based on Whispering-gallery-mode Resonators

Published on: August 5, 2013

Focused ion beam engineered whispering gallery mode resonators with open cavity structure.

David C Aveline1, Lukas Baumgartel, Byungmin Ahn

  • 1Quantum Sciences and Technology, Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Dr. Pasadena 91109, California, USA. daveline@jpl.nasa.gov

Optics Express
|October 6, 2012
PubMed
Summary

Researchers created an open cavity whispering gallery mode optical resonator by notching a crystalline disc. This novel optical resonator achieves high quality factors, enabling new interactions with light and matter.

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

Published on: April 4, 2016

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Last Updated: May 18, 2026

Microwave Photonics Systems Based on Whispering-gallery-mode Resonators
12:18

Microwave Photonics Systems Based on Whispering-gallery-mode Resonators

Published on: August 5, 2013

Stimulated Stokes and Antistokes Raman Scattering in Microspherical Whispering Gallery Mode Resonators
12:21

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

Published on: April 4, 2016

Area of Science:

  • Optics and Photonics
  • Microfabrication
  • Cavity Quantum Electrodynamics

Background:

  • Whispering gallery mode resonators are crucial for photonics.
  • Existing resonators often lack direct access to the optical field for external interactions.

Purpose of the Study:

  • To engineer an open cavity whispering gallery mode optical resonator.
  • To enable direct interaction between the optical field and external systems.

Main Methods:

  • Focused ion beam microfabrication to create a notch in a crystalline disc resonator.
  • Characterization of optical modes and quality factor (Q).
  • Spatial profiling of intra-cavity modes using a microfabricated probe.

Main Results:

  • Realization of an open cavity resonator with a free space gap.
  • Demonstrated high quality factor (Q ~ 10^6), limited by surface roughness from ion milling.
  • Investigated spatial mode profiles within the open cavity.

Conclusions:

  • The open cavity resonator design is feasible and supports high-quality modes.
  • This structure allows for enhanced light-matter interactions.
  • Potential applications include coupling to mechanical resonators and single atoms/molecules.