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Properties of a laser cavity containing an absorbing ring

Abdelkrim Hasnaoui1, Kamel Ait-Ameur

  • 1Laboratoire d'Electronique Quantique, Faculté de Physique, Université des Sciences et de la Technologie Houari Boumédiène, B.P. n degrees 32, El Alia, 16111 Algiers, Algeria.

Applied Optics
|July 22, 2010
PubMed

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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: