title: Scattering Optical Elements: Stand-Alone Optical Elements Exploiting Multiple Light Scattering.
abstract: Optical design and fabrication techniques are crucial for making optical elements. From conventional lenses to diffractive optical elements and to recent metasurfaces, various types of optical elements have been proposed to manipulate light where optical materials are fabricated into desired structures. Here, we propose a scattering optical element (SOE) that exploits multiple light scattering and wavefront shaping. Instead of fabricating optical materials, the SOE consists of a disordered medium and a photopolymer-based wavefront recorder, with shapes impinging on light on demand. With the proposed stand-alone SOEs, we experimentally demonstrate control of various properties of light, including intensity, polarization, spectral frequency, and near field. Due to the tremendous freedom brought about by disordered media, the proposed approach will provide unexplored routes to manipulate arbitrary optical fields in stand-alone optical elements.
authors.forename: Jongchan
authors.initials: J
authors.lastname: Park
authors.affiliation: Department of Materials Science and Engineering, Korea University , Seoul 136-713, Republic of Korea.
authors.forename: Joong-Yeon
authors.initials: JY
authors.lastname: Cho
authors.forename: Chunghyun
authors.initials: C
authors.lastname: Park
authors.forename: KyeoReh
authors.initials: K
authors.lastname: Lee
authors.affiliation: Department of Materials Science and Engineering, Korea University , Seoul 136-713, Republic of Korea.
authors.forename: Heon
authors.initials: H
authors.lastname: Lee
authors.forename: Yong-Hoon
authors.initials: YH
authors.lastname: Cho
authors.forename: YongKeun
authors.initials: Y
authors.lastname: Park
keywords: multiple scattering; optical element; optical near field; volume hologram; wavefront shaping