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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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Updated: Jul 10, 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

Cavity solitons in bidirectional lasers.

Isabel Pérez-Arjona1, Víctor J Sánchez-Morcillo, Eugenio Roldán

  • 1Departament de Física Aplicada, Escola Politècnica Superior de Gandia, Universitat Politècnica de València, Grau de Gandia, Spain.

Optics Letters
|November 3, 2007
PubMed
Summary

Theoretical analysis reveals that bidirectional lasers with asymmetric cavity losses support complementary cavity solitons (CSs). These solitons, existing as bright or dark states, can be dynamically written or erased by external optical pulses.

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Area of Science:

  • Nonlinear optics
  • Laser physics
  • Optical solitons

Background:

  • Bidirectional lasers are crucial for various optical applications.
  • Cavity solitons (CSs) are localized light structures within optical cavities.
  • Asymmetric cavity losses can influence the behavior of light fields within a laser.

Purpose of the Study:

  • To theoretically investigate the existence of cavity solitons in a broad area bidirectional laser.
  • To explore the relationship between cavity losses and the nature of sustained cavity solitons.
  • To determine the feasibility of controlling cavity solitons via external pulse injection.

Main Methods:

  • Theoretical modeling of a broad area bidirectional laser system.
  • Analysis of the coupled field equations considering differential cavity losses.
  • Numerical simulations to observe soliton formation and manipulation.

Main Results:

  • Demonstration of cavity soliton formation in a bidirectional laser with slightly different cavity losses.
  • Observation of complementary bright and dark cavity solitons corresponding to higher and lower loss fields, respectively.
  • Confirmation that cavity solitons can be written or erased by injecting optical pulses into either counterpropagating field.

Conclusions:

  • Asymmetric cavity losses in bidirectional lasers inherently support complementary cavity solitons.
  • The dynamic control of these cavity solitons offers potential for novel optical switching and information processing applications.
  • This theoretical framework provides a foundation for experimental realization and further investigation of soliton-based laser dynamics.