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Operating principle of a spaceplate. Click for info.
Operating principle of a spaceplate. a, A spaceplate can compress a propagation length of deff into a thickness d. For example, a beam incident on the spaceplateat angle θ will emerge at that same angle and be transversely translated by length w (resulting in a lateral beam shift ∆x), just as it would for deff of free space. b, Adding a spaceplate to an imaging system such as a standard camera (top) will shorten the camera (center). An ultrathin monolithic imaging system can be formed by integrating a metalens and a spaceplate directly on a sensor (bottom). Credit: Orad Reshef and Jeff Lundeen u Ottawa / Nature Communications.
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