| タイトル | Poisson-Spot Intensity Reduction with a Partially-Transparent Petal-Shaped Optical Mask |
| 本文（外部サイト） | http://hdl.handle.net/2060/20160000807 |
| 著者（英） | Wasylkiwskyj, Wasyl; Shiri, Shahram |
| 発行日 | 2013-02-12 |
| 言語 | eng |
| 内容記述 | The presence of Poisson's spot, also known as the spot of Arago, formed along the optical axis in the geometrical shadow behind an obstruction, has been known since the 18th century. The presence of this spot can best be described as the consequence of constructive interference of light waves diffracted on the edge of the obstruction where its central position canbe determined by the symmetry of the object More recently, the elimination of this spot has received attention in the fields of particle physics, high-energy lasers, astronomy and lithography. In this paper, we introduce a novel, partially transparent petaled mask shape that suppresses the bright spot by up to 10 orders of magnitude in intensity, with powerful applications to many of the above fields. The optimization technique formulated in this design can identify mask shapes having partial transparency only near the petal tips. |
| NASA分類 | Numerical Analysis; Optics |
| レポートNO | GSFC-500-12-D-0305 |
| 権利 | Copyright, Distribution as joint owner in the copyright |
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