A Gaussian reflective metasurface for advanced wavefront manipulation
Authors:
- Jade Martínez-LlinàsJMJade Martínez-Llinàs
- Clément HenryCHClément Henry
- Daniel AndrénDADaniel Andrén
- Ruggero VerreRVRuggero Verre
- Mikael KällMKMikael Käll
- Philippe TassinPTPhilippe Tassin
- 15 July 2019
- journal article
- research article
- Published by Optica Publishing Group in Optics Express
- Vol. 27 (15) , 21069-21082
Abstract
Metasurfaces enable us to control the fundamental properties of light with unprecedented flexibility. However, most metasurfaces realized to date aim at modifying plane waves. While the manipulation of nonplanar wavefronts is encountered in a diverse number of applications, their control using metasurfaces is still in its infancy. Here we design a metareflector able to reflect a diverging Gaussian beam back onto itself with efficiency over 90% and focusing at an arbitrary distance. We outline a clear route towards the design of complex metareflectors that can find applications as diverse as optical tweezing, lasing, and quantum optics.Keywords
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