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Related Concept Videos

Momentum And Radiation Pressure01:20

Momentum And Radiation Pressure

An object absorbing an electromagnetic wave would experience a force in the direction of propagation of the wave. This force occurs because electromagnetic waves contain and transport momentum. The force accounts for the wave's radiation pressure exerted on the object. Maxwell's prediction was confirmed in 1903 by Nichols and Hull by precisely measuring radiation pressures with a torsion balance. The measuring instrument had mirrors suspended from a fiber kept inside a glass container. Nichols...
Radiation Pressure: Problem Solving01:09

Radiation Pressure: Problem Solving

The radiation pressure applied by an electromagnetic wave on a perfectly absorbing surface equals the energy density of the wave. The wave's momentum also gets transferred to the surface when an electromagnetic wave is entirely absorbed by it. The rate at which momentum is transmitted to an absorbing surface perpendicular to the propagation direction equals the force on the surface.
The average value of the rate of momentum transfer divided by the absorbing area represents the average force per...
Forced Oscillations01:06

Forced Oscillations

When an oscillator is forced with a periodic driving force, the motion may seem chaotic. The motions of such oscillators are known as transients. After the transients die out, the oscillator reaches a steady state, where the motion is periodic, and the displacement is determined.

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Related Experiment Video

Updated: Jun 22, 2026

Fabrication and Testing of Microfluidic Optomechanical Oscillators
09:10

Fabrication and Testing of Microfluidic Optomechanical Oscillators

Published on: May 29, 2014

Radiation-pressure-driven micro-mechanical oscillator.

H Rokhsari, T Kippenberg, T Carmon

    Optics Express
    |June 6, 2009
    PubMed
    Summary
    This summary is machine-generated.

    Researchers observed radiation-pressure-induced instability in microscale optical resonant systems. This instability causes regenerative oscillations in microcavity mechanical modes, with implications for quantum mechanics and photonics.

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    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

    Area of Science:

    • Optics and Photonics
    • Quantum Mechanics
    • Mechanical Engineering

    Background:

    • Microscale optical resonant systems with high Q factors are susceptible to radiation-pressure effects.
    • Radiation pressure can induce instabilities in these systems, leading to mechanical oscillations.
    • Understanding these instabilities is crucial for advancing quantum phenomena research and gravitational wave detection.

    Purpose of the Study:

    • To report the first observation of radiation-pressure-induced instability in a microscale optical resonant system.
    • To investigate the manifestation of this instability as regenerative oscillations in mechanical modes.
    • To explore the potential applications of this phenomenon in quantum mechanics, LIGO, and photonics.

    Main Methods:

    • Fabrication of a microscale, chip-based optical resonant device.
    • Experimental observation and characterization of mechanical mode oscillations.
    • Analysis of the instability mechanism driven by radiation pressure.

    Main Results:

    • First experimental demonstration of radiation-pressure-induced instability in a microscale optical system.
    • Observed regenerative oscillations of mechanical modes at radio frequencies.
    • Confirmation of the instability's link to enhanced Q factors in the resonant system.

    Conclusions:

    • The study confirms the existence and mechanism of radiation-pressure-induced instability in microscale optical resonators.
    • This finding has significant implications for research in macroscale quantum mechanics and the Laser Interferometer Gravitational-Wave Observatory (LIGO).
    • The phenomenon presents opportunities for novel technological applications in photonics.