Design for quality: reconfigurable flat optics based on active metasurfaces
Abstract
Optical metasurfaces, planar subwavelength nanoantenna arrays with the singular ability to sculpt wavefront in almost arbitrary manners, are poised to become a powerful tool enabling compact and high-performance optics with novel functionalities. A particularly intriguing research direction within this field is active metasurfaces, whose optical response can be dynamically tuned postfabrication, thus allowing a plurality of applications unattainable with traditional bulk optics. Designing reconfigurable optics based on active metasurfaces is, however, presented with a unique challenge, since the optical quality of the devices must be optimized at multiple optical states. In this article, we provide a critical review on the active meta-optics design principles and algorithms that are applied across structural hierarchies ranging from single meta-atoms to full meta-optical devices. The discussed approaches are illustrated by specific examples of reconfigurable metasurfaces based on optical phase-change materials.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Jul 29, 2020
- Source ID
- 10.1515/nanoph-2020-0033
Entities
People
- Bowen Zheng
- Carlos Ríos
- Clayton Fowler
- Douglas H. Werner
- Eric B. Whiting
- Hualiang Zhang
- Juejun Hu
- Lei Kang
- Mikhail Y Shalaginov
- Sawyer D. Campbell
- Sensong An
- Tian Gu
- Yifei Zhang
- Yuhao Wu
Organizations
- Defense Advanced Research Projects Agency
- Massachusetts Institute of Technology
- Pennsylvania State University
- University of Massachusetts Lowell