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Standing Waves in a Cavity

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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Rapid Repetition Rate Fluctuation Measurement of Soliton Crystals in a Microresonator

Rapid Repetition Rate Fluctuation Measurement of Soliton Crystals in a Microresonator

Published on: December 15, 2021

Cavity soliton laser based on mutually coupled semiconductor microresonators.

P Genevet¹, S Barland, M Giudici

¹Université de Nice Sophia Antipolis, Institut Non-Linéaire de Nice, Valbonne, France.

Physical Review Letters

|October 15, 2008

Summary

This summary is machine-generated.

Researchers observed localized structures in coupled semiconductor resonators, similar to cavity solitons but without a driving beam. These structures can be individually controlled using a local beam, offering new possibilities for optical devices.

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Area of Science:

Nonlinear optics
Semiconductor physics
Photonics

Background:

Broad-area semiconductor resonators are key components in various photonic applications.
Cavity solitons are self-localized light structures in nonlinear optical systems.
Controlling localized structures is crucial for developing advanced optical devices.

Purpose of the Study:

To experimentally observe localized structures in a system of two mutually coupled broad-area semiconductor resonators.
To investigate the properties of these structures and their relationship to cavity solitons.
To demonstrate the controllability of these localized structures.

Main Methods:

Utilizing two mutually coupled broad-area semiconductor resonators, with one acting as a saturable absorber.
Observing the formation and coexistence of localized structures with a dark homogeneous background.
Employing a local addressing beam to switch individual structures on and off.

Main Results:

Experimental observation of localized structures in the coupled resonator system.
Demonstration that these structures exhibit properties similar to cavity solitons.
Confirmation that these structures form without the need for a driving beam.
Successful individual switching of localized structures using a local addressing beam.

Conclusions:

Localized structures can be formed and controlled in coupled semiconductor resonators without a driving beam.
These structures offer a novel pathway for creating and manipulating optical solitons.
The ability to individually address these structures opens avenues for applications in all-optical signal processing and information storage.