Distortion-free structured light SPIEtweets
with projective holograms, which with digital micromirror devices and photodiodes can certainly be done on millisecond time scales. This can be improved down to microseconds if the projective holograms are hard-coded, such as on a diffractive optical element or metasurface, possibly because the channel does not have to be probed in the basis of eigenmodes.
could be generalized to the invariance of all properties of the field, an appealing notion for energy transport and imaging through complex systems.The search for robust states of structured light in noisy channels is a pressing challenge, promising enhanced channel capacity and reach.
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