Peering into darkness with a vortex spatial filter.

نویسنده

  • G A Swartzlander
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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عنوان ژورنال:
  • Optics letters

دوره 26 8  شماره 

صفحات  -

تاریخ انتشار 2001