283 citations · 1.2k across the 17 of their papers we have counts for
18 papers
Optimization of Active Reconfigurable Surfaces for Spatiotemporal MU-MIMO Wave Routing in Disordered Media: Application to the Cocktail-Party Problem
Frederic J. N. Jorgensen, Florent Dorlot, Constant Bourdeloux +4
We design an active reconfigurable intelligent surface (RIS) for acoustic multi-user multiple-input multiple-output (MU-MIMO) communication by solving a large-scale convex optimiza…
Time-reversal-symmetry bounds on electromagnetic fields
Wenchao Ma, Raphaël Pestourie, Steven G. Johnson
For linear electromagnetic systems possessing time-reversal symmetry, we present an approach to bound ratios of internal fields excited from different ports, using only the scatter…
Towards optimal spatiotemporal wavefront shaping for the cocktail party problem with inverse design of an acoustic reconfigurable metasurface in disordered media
Raphael Pestourie, Constant Bourdeloux, Fabrice Lemoult +2
Multiple-user multiple-input multiple-output applications have recently gained a lot of attention. Here, we show an efficient optimization formulation for the design of all the tem…
Efficient inverse design of large-area metasurfaces for incoherent light
Raphaël Pestourie, Wenjie Yao, Boubacar Kanté +1
Incoherent light is ubiquitous, yet designing optical devices that can handle its random nature is very challenging, since directly averaging over many incoherent incident beams ca…
Inverse-Designed Meta-Optics with Spectral-Spatial Engineered Response to Mimic Color Perception
Chris Munley, Wenchao Ma, Johannes E. Fröch +7
Meta-optics have rapidly become a major research field within the optics and photonics community, strongly driven by the seemingly limitless opportunities made possible by controll…
Multifidelity deep neural operators for efficient learning of partial differential equations with application to fast inverse design of nanoscale heat transport
Lu Lu, Raphael Pestourie, Steven G. Johnson +1
Deep neural operators can learn operators mapping between infinite-dimensional function spaces via deep neural networks and have become an emerging paradigm of scientific machine l…
Efficient perturbative framework for coupling of radiative and guided modes in nearly periodic surfaces
Sophie Fisher, Raphaël Pestourie, Steven G. Johnson
We present a semi-analytical framework for computing the coupling of radiative and guided waves in slowly varying (nearly uniform or nearly periodic) surfaces, which is especially…
Physics-enhanced deep surrogates for partial differential equations
Raphaël Pestourie, Youssef Mroueh, Chris Rackauckas +2
Many physics and engineering applications demand Partial Differential Equations (PDE) property evaluations that are traditionally computed with resource-intensive high-fidelity num…
End-to-end metasurface inverse design for single-shot multi-channel imaging
Zin Lin, Raphaël Pestourie, Charles Roques-Carmes +4
We introduce end-to-end metaoptics inverse design for multi-channel imaging: reconstruction of depth, spectral and polarization channels from a single-shot monochrome image. The pr…
Inverse Designed Extended Depth of Focus Meta-Optics for Broadband Imaging in the Visible
Elyas Bayati, Raphael Pestourie, Shane Colburn +3
We report an inverse-designed, high numerical aperture (~0.44), extended depth of focus (EDOF) meta-optic, which exhibit a lens-like point spread function (PSF). The EDOF meta-opti…
Inverse design enables large-scale high-performance meta-optics reshaping virtual reality
Zhaoyi Li, Raphaël Pestourie, Joon-Suh Park +3
Meta-optics has achieved major breakthroughs in the past decade; however, conventional forward design faces challenges as functionality complexity and device size scale up. Inverse…
Physics-informed neural networks with hard constraints for inverse design
Lu Lu, Raphael Pestourie, Wenjie Yao +3
Inverse design arises in a variety of areas in engineering such as acoustic, mechanics, thermal/electronic transport, electromagnetism, and optics. Topology optimization is a major…
Active learning of deep surrogates for PDEs: Application to metasurface design
Raphaël Pestourie, Youssef Mroueh, Thanh V. Nguyen +2
Surrogate models for partial-differential equations are widely used in the design of meta-materials to rapidly evaluate the behavior of composable components. However, the training…
End-to-End Nanophotonic Inverse Design for Imaging and Polarimetry
Zin Lin, Charles Roques-Carmes, Raphaël Pestourie +3
By co-designing a meta-optical front end in conjunction with an image-processing back end, we demonstrate noise sensitivity and compactness substantially superior to either an opti…
Inverse designed metalenses with extended depth of focus
Elyas Bayati, Raphael Pestourie, Shane Colburn +3
Extended depth of focus (EDOF) lenses are important for various applications in computational imaging and microscopy. In addition to enabling novel functionalities, EDOF lenses can…
Topology optimization of freeform large-area metasurfaces
Zin Lin, Victor Liu, Raphaël Pestourie +1
We demonstrate optimization of optical metasurfaces over -- degrees of freedom in two and three dimensions, 100--1000+ wavelengths () in diameter, with 100+ paramete…
Inverse design of large-area metasurfaces
Raphaël Pestourie, Carlos Pérez-Arancibia, Zin Lin +3
We present a computational framework for efficient optimization-based "inverse design" of large-area "metasurfaces" (subwavelength-patterned surfaces) for applications such as mult…
Sideways adiabaticity: Beyond ray optics for slowly varying metasurfaces
Carlos Pérez-Arancibia, Raphaël Pestourie, Steven G. Johnson
Optical metasurfaces (subwavelength-patterned surfaces typically described by variable effective surface impedances) are typically modeled by an approximation akin to ray optics: t…