Inverse‐Designed Meta‐Optics with Spectral‐Spatial Engineered Response to Mimic Color Perception. Issue 20 (28th July 2022)

• Record Type: Journal Article
• Authors: Munley, Chris; Ma, Wenchao; Fröch, Johannes E.; Tanguy, Quentin A. A.; Bayati, Elyas; Böhringer, Karl F.; Lin, Zin; Pestourie, Raphaël; Johnson, Steven G.; Majumdar, Arka
• Is Part Of: Advanced optical materials. Volume 10:Issue 20(2022)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2022-07-28
• Subjects: color sensors -- color space -- dielectric metasurface -- inverse design -- meta‐optics; Optical materials -- Periodicals; Photonics -- Periodicals; 620.11295
• DOI: 10.1002/adom.202200734
• Languages: English
• ISSNs: 2195-1071

Abstract

Abstract: 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 controlling optical wavefronts through interaction with arrays of sub‐wavelength scatterers. As more and more modalities are explored, the design strategies to achieve desired functionalities become increasingly demanding, necessitating more advanced design techniques. Herein, the inverse design approach is utilized to create a set of single‐layer meta‐optics that simultaneously focus light and shape the spectra of focused light without using any filters. Thus, both spatial and spectral properties of the meta‐optics are optimized, resulting in spectra that mimic the color matching functions of the CIE 1931 XYZ color space, which links the spectral distribution of a light source to the color perception of a human eye. Experimental demonstrations of these meta‐optics show qualitative agreement with the theoretical predictions and help elucidate the focusing mechanism of these devices. Abstract : The inverse‐design approach is utilized to optimize both spatial and spectral properties of single‐layer meta‐optics, which simultaneously focus light and shape the spectra of focused light without using any filters. The engineered spectra mimic the color matching functions of the CIE 1931 XYZ color space. Experimental demonstrations show qualitative agreement with the theoretical predictions.