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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:

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Related Experiment Video

Updated: Jun 22, 2026

Construction and Characterization of External Cavity Diode Lasers for Atomic Physics
09:10

Construction and Characterization of External Cavity Diode Lasers for Atomic Physics

Published on: April 24, 2014

Phase-locking phenomenon in a semiconductor laser with external cavities.

F R Ruiz-Oliveras, A N Pisarchik

    Optics Express
    |June 18, 2009
    PubMed
    Summary
    This summary is machine-generated.

    Researchers numerically found phase-locked solutions in semiconductor lasers with external cavities. Adjusting cavity lengths and feedback strengths controls complex dynamics and chaos, offering new possibilities for laser control.

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    Area of Science:

    • Optics and Photonics
    • Nonlinear Dynamics
    • Semiconductor Physics

    Background:

    • Semiconductor lasers are crucial components in modern technology.
    • Controlling their complex dynamics, including chaos, is essential for advanced applications.
    • External cavities significantly influence laser behavior and stability.

    Purpose of the Study:

    • To numerically investigate phase-locked solutions in semiconductor lasers with one and two external cavities.
    • To explore the formation of dynamical regimes within parameter spaces.
    • To identify methods for controlling complex dynamics and chaos in these laser systems.

    Main Methods:

    • Numerical simulations were employed to analyze the semiconductor laser model.
    • Bi-dimensional parameter spaces, including external cavity lengths, feedback strengths, and pump parameter, were explored.
    • Arnold's tongues were mapped to identify different dynamical regimes.

    Main Results:

    • Phase-locked solutions were successfully identified numerically.
    • Periodic, quasiperiodic, chaotic, and steady-state regimes were observed.
    • These regimes formed distinct Arnold's tongues in the analyzed parameter spaces.

    Conclusions:

    • The study reveals a rich structure of dynamical regimes in semiconductor lasers with external cavities.
    • Adjusting external cavity lengths and feedback strengths provides a means to control complex dynamics and chaos.
    • This offers enhanced possibilities for precise control of semiconductor laser behavior.