End-to-end nanophotonic inverse design for imaging and polarimetry

Author:

Lin Zin1,Roques-Carmes Charles2,Pestourie Raphaël1,Soljačić Marin23,Majumdar Arka45,Johnson Steven G.1

Affiliation:

1. Department of Mathematics , Massachusetts Institute of Technology , Cambridge , MA 02138, USA

2. Research Lab of Electronics , Massachusetts Institute of Technology , Cambridge , MA 02138, USA

3. Department of Physics , Massachusetts Institute of Technology , Cambridge , MA 02138, USA

4. Department of Electrical and Computer Engineering , University of Washington , Seattle , WA 98195, USA

5. Department of Physics , University of Washington , Seattle , WA 98195, USA

Abstract

Abstract By codesigning a metaoptical front end in conjunction with an image-processing back end, we demonstrate noise sensitivity and compactness substantially superior to either an optics-only or a computation-only approach, illustrated by two examples: subwavelength imaging and reconstruction of the full polarization coherence matrices of multiple light sources. Our end-to-end inverse designs couple the solution of the full Maxwell equations—exploiting all aspects of wave physics arising in subwavelength scatterers—with inverse-scattering algorithms in a single large-scale optimization involving 10 4 $\gtrsim {10}^{4}$ degrees of freedom. The resulting structures scatter light in a way that is radically different from either a conventional lens or a random microstructure, and suppress the noise sensitivity of the inverse-scattering computation by several orders of magnitude. Incorporating the full wave physics is especially crucial for detecting spectral and polarization information that is discarded by geometric optics and scalar diffraction theory.

Funder

U.S. Army Research Office through the Institute for Soldier Nanotechnologies

MIT-IBM Watson AI Laboratory

National Science Foundation

Publisher

Walter de Gruyter GmbH

Subject

Electrical and Electronic Engineering,Atomic and Molecular Physics, and Optics,Electronic, Optical and Magnetic Materials,Biotechnology

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