Enabling Manufacturable Optical Broadband Angular-Range Selective Films

Enabling Manufacturable Optical Broadband Angular-Range Selective Films

The ability to control the propagation direction of light has long been a scientific goal. However, the fabrication of large-scale optical angular-range selective films is still a challenge. This paper presents a polymer-enabled large-scale fabrication method for broadband angular-range selective fi...

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Bibliographic Details
Main Authors: Yin, Kezhen, Qu, Yurui, Kooi, Steven E, Li, Wei, Feng, Jingxing, Ratto, Jo Ann, Joannopoulos, John D, Soljačić, Marin, Shen, Yichen
Other Authors: Massachusetts Institute of Technology. Institute for Soldier Nanotechnologies
Format: Article
Language:English
Published: American Chemical Society (ACS) 2022
Online Access:https://hdl.handle.net/1721.1/142556
Description
Summary:The ability to control the propagation direction of light has long been a scientific goal. However, the fabrication of large-scale optical angular-range selective films is still a challenge. This paper presents a polymer-enabled large-scale fabrication method for broadband angular-range selective films that perform over the entire visible spectrum. Our approach involves stacking together multiple one-dimensional photonic crystals with various engineered periodicities to enlarge the bandgap across a wide spectral range based on theoretical predictions. Experimental results demonstrate that our method can achieve broadband transparency at a range of incident angles centered around normal incidence and reflectivity at larger viewing angles, doing so at large scale and low cost.

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