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Observation of lasing modes with exotic localized wave patterns from astigmatic large-Fresnel-number cavities

T H Lu1, Y C Lin, H C Liang

  • 1Department of Physics, National Taiwan Normal University, Taipei, Taiwan.

Optics Letters
|February 4, 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: