Flat optics for dynamic wavefront manipulation

Mark L. Brongersma

doi:10.1117/12.2624182

24 May 2022 Flat optics for dynamic wavefront manipulation

Mark L. Brongersma

Proceedings Volume PC12130, Metamaterials XIII; PC1213003 (2022) https://doi.org/10.1117/12.2624182
Event: SPIE Photonics Europe, 2022, Strasbourg, France

Abstract

Since the development of diffractive optical elements in the 1970s, major research efforts have focused on replacing bulky optical components by thinner, planar counterparts. The more recent advent of metasurfaces, i.e. nanostructured optical coatings, has further accelerated the development of flat optics through the realization that nanoscale antenna elements can be utilized to facilitate local and nonlocal control over the light scattering amplitude and phase. In this presentation, I will start by showing how passive and active metasurfaces can start to impact Mixed Reality applications. I will discuss the creation of high-efficiency, metasurfaces for OLED displays, and eye tracking systems. I will also highlight recent efforts in our group to realize electrically-tunable metasurfaces employing nanomechanics, tunable transparent oxides, electrochemistry, microfluidics, phase change materials, and atomically-thin semiconductors. Such elements are capable of dynamic wavefront manipulation for optical beam steering, wavefront manipulation, and future displays. The proposed optical elements can be fabricated by scalable fabrication technologies, opening the door to a wide range of commercial applications.

Conference Presentation

Citation Download Citation

Mark L. Brongersma "Flat optics for dynamic wavefront manipulation", Proc. SPIE PC12130, Metamaterials XIII, PC1213003 (24 May 2022); https://doi.org/10.1117/12.2624182

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