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標題: Spectral switches of a double slit with a movable central part in the far-field
作者: Han, P.
韓 斌
Lee, C.L.
關鍵字: singular optics
spectral switches
double slit with movable central
Gaussian spectrum
Fresnel-Kirchhoff diffraction integral
期刊/報告no:: Journal of Optics a-Pure and Applied Optics, Volume 11, Issue 8.
摘要: The far-field spectral properties for a broad-band Gaussian spectrum incident on a double slit with a movable central part are investigated. The analytic expression is first derived and some numerical examples based on it are given to illustrate the anomalous behavior of the diffracted spectrum. It is found that the important effect called spectral switches can be controlled by simply moving the central part of the double slit. This control mechanism has the merit of easier implementation than previous schemes which modulate some properties of the light source (e.g. spatial coherence or spectral bandwidth) to achieve it.
ISSN: 1464-4258
Appears in Collections:精密工程研究所



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