Diffraction properties of opaque disks outside and inside a laser cavity

作者：de Saint Denis Renaud; Passilly Nicolas; Fromager Michael; Cagniot Emmanuel; Ait Ameur Kamel^*

来源：Optics Communications, 2008, 281(3): 444-451.

DOI：10.1016/j.optcom.2007.09.062

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.

• 出版日期2008-2-1