Peering into darkness with a vortex spatial filter.
نویسنده
چکیده
I propose to use as a window the dark core of an optical vortex to examine a weak background signal hidden in the glare of a bright coherent source. Applications such as the detection of an astronomical object, forward-scattered radiation, and incoherent light are described whereby signal enhancements of at least 7 orders of magnitude may be achieved.
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ورودعنوان ژورنال:
- Optics letters
دوره 26 8 شماره
صفحات -
تاریخ انتشار 2001