Spatiotemporal light control with active metasurfaces
Top Cited Papers
- 17 May 2019
- journal article
- review article
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 364 (6441), eaat3100-+
- https://doi.org/10.1126/science.aat3100
Abstract
Optical metasurfaces have provided us with extraordinary ways to control light by spatially structuring materials. The space-time duality in Maxwell’s equations suggests that additional structuring of metasurfaces in the time domain can even further expand their impact on the field of optics. Advances toward this goal critically rely on the development of new materials and nanostructures that exhibit very large and fast changes in their optical properties in response to external stimuli. New physics is also emerging as ultrafast tuning of metasurfaces is becoming possible, including wavelength shifts that emulate the Doppler effect, Lorentz nonreciprocity, time-reversed optical behavior, and negative refraction. The large-scale manufacturing of dynamic flat optics has the potential to revolutionize many emerging technologies that require active wavefront shaping with lightweight, compact, and power-efficient components.Keywords
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