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Diffraction properties of opaque disks outside and inside a laser cavity

Abstract : Diffraction of symmetrical Laguerre–Gauss TEMp0 beams incident on an opaque disk known as a stop is considered. The near- and far-field patterns are studied. Thanks to zero-field occluding, conversion from TEM10 beam to dark hollow beam can be achieved with better efficiency than from a TEM00 beam. It is shown that the fundamental mode of a laser cavity including a diaphragm and a stop can be TEM00- or TEM10-like in shape depending on their size. This result is interpreted from the new divergence hierarchy, which characterises the diffracted TEMp0 beams emerging from the stop.
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https://hal-cea.archives-ouvertes.fr/cea-00324523
Contributor : Chantal Brassy <>
Submitted on : Thursday, September 25, 2008 - 11:32:13 AM
Last modification on : Tuesday, April 2, 2019 - 1:34:39 AM

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  • HAL Id : cea-00324523, version 1

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Renaud de Saint Denis, Nicolas Passilly, Michael Fromager, Emmanuel Cagniot, Kamel Aït Ameur. Diffraction properties of opaque disks outside and inside a laser cavity. Optics Communications, Elsevier, 2008, 281, pp.444-451. ⟨cea-00324523⟩

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