Imaging from the Visible to the Longwave Infrared wavelengths via an inverse-designed flat lens

10 Jan 2020 Meem Monjurul Banerji Sourangsu Majumder Apratim Garcia Juan C. Hon Philip W. C. Sensale-Rodriguez Berardi Menon Rajesh

It is generally assumed that correcting chromatic aberrations in imaging requires optical elements. Here, we show that by allowing the phase in the image plane to be a free parameter, it is possible to correct chromatic variation of focal length over an extremely large bandwidth, from the visible (Vis) to the longwave infrared (LWIR) wavelengths using a single diffractive surface, i.e., a flat lens... (read more)

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