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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:
Joule-Thomson Effect01:21

Joule-Thomson Effect

The Joule-Thomson effect, also known as the Joule-Kelvin effect, describes the temperature change of a fluid when it is forced through a valve or porous plug while keeping it in a thermally insulated environment. This experiment is called a throttling process. This is an important effect widely used in refrigeration and the liquefaction of gases.
This experiment forces high-pressure gas through a throttle valve or a porous plug to a lower-pressure region. The gas expands as it passes through to...

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Related Experiment Video

Updated: Jun 20, 2026

High Speed Sub-GHz Spectrometer for Brillouin Scattering Analysis
13:31

High Speed Sub-GHz Spectrometer for Brillouin Scattering Analysis

Published on: December 22, 2015

Pulse compression in a phase-conjugating Brillouin cavity.

M J Damzen, M H Hutchinson

    Optics Letters
    |September 2, 2009
    PubMed
    Summary

    A novel Brillouin cavity was created using two mirrors in a methane chamber. This setup generates a train of intense, short laser pulses, acting as a phase-conjugate resonator.

    Area of Science:

    • Nonlinear Optics
    • Laser Physics
    • Cavity Optics

    Background:

    • Brillouin scattering is a nonlinear optical effect.
    • Phase-conjugate resonators offer unique light manipulation properties.
    • Generating intense, short laser pulses is crucial for many applications.

    Purpose of the Study:

    • To create a novel optical cavity using Brillouin mirrors.
    • To investigate the oscillation and pulse compression capabilities of the Brillouin cavity.
    • To demonstrate the phase-conjugate resonator characteristics of the system.

    Main Methods:

    • Formation of two Brillouin mirrors at opposite ends of a methane chamber.
    • Injection of a laser pulse into the chamber to initiate oscillation.
    • Observation and analysis of the generated pulse train and cavity behavior.

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    High-speed Continuous-wave Stimulated Brillouin Scattering Spectrometer for Material Analysis
    07:55

    High-speed Continuous-wave Stimulated Brillouin Scattering Spectrometer for Material Analysis

    Published on: September 22, 2017

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    Last Updated: Jun 20, 2026

    High Speed Sub-GHz Spectrometer for Brillouin Scattering Analysis
    13:31

    High Speed Sub-GHz Spectrometer for Brillouin Scattering Analysis

    Published on: December 22, 2015

    High-speed Continuous-wave Stimulated Brillouin Scattering Spectrometer for Material Analysis
    07:55

    High-speed Continuous-wave Stimulated Brillouin Scattering Spectrometer for Material Analysis

    Published on: September 22, 2017

    Main Results:

    • Successful oscillation of the Brillouin cavity when injected with a laser pulse.
    • Demonstration of pulse-compressing mechanisms by the Brillouin mirrors.
    • Observation of characteristic phase-conjugate resonator behavior.

    Conclusions:

    • A functional Brillouin cavity capable of oscillation has been developed.
    • The cavity effectively produces intense, short-duration laser pulses.
    • The Brillouin cavity exhibits phase-conjugate resonator properties.