Amplitude-only, passive, broadband, optical spatial cloaking of very large objects

We demonstrate three amplitude cloaks that can hide very large spatial objects over the entire visible spectrum using only passive, off-the-shelf optics. The cloaked region for all of the devices exceeds 10⁶ mm³, with the largest exceeding 10⁸ mm³. Although unidirectional, these cloaks can hide the...

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Bibliographic Details
Published in:Applied optics (2004) 2014-03, Vol.53 (9), p.1958
Main Authors: Howell, John C, Howell, J Benjamin, Choi, Joseph S
Format: Article
Language:English
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Summary:We demonstrate three amplitude cloaks that can hide very large spatial objects over the entire visible spectrum using only passive, off-the-shelf optics. The cloaked region for all of the devices exceeds 10⁶ mm³, with the largest exceeding 10⁸ mm³. Although unidirectional, these cloaks can hide the cloaked object, even if the object is transversely illuminated or self-illuminated. Due to the small usable solid angle, but simple scaling, these cloaks may be of value in hiding small field-of-view objects such as mid- to high-earth orbit satellites from earth-based observation. Active phase front manipulation can also make these cloaks invisible to some forms of image homodyning.
ISSN:1559-128X
2155-3165
DOI:10.1364/AO.53.001958