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Optical metasurfaces for high angle steering at visible wavelengths.
Dianmin Lin1, Mauro Melli2, Evgeni Poliakov2
1Magic Leap Inc., Plantation, FL, 33322, USA. dlin@magicleap.com.
Scientific Reports
|May 25, 2017
Summary
New silicon metasurfaces steer visible light to large angles, overcoming previous limitations. These ultrathin devices offer high efficiency across various incidence angles for transmission and reflection modes.
Area of Science:
- Photonics and Nanotechnology
- Optics and Light Manipulation
Background:
- Metasurfaces offer ultrathin, planar alternatives to conventional optical elements.
- Prior metasurface designs were constrained by small deflection angles and limited angles of incidence.
Purpose of the Study:
- To develop novel silicon metasurfaces capable of steering visible light to large deflection angles.
- To achieve high diffraction efficiencies over a wide range of incidence angles.
Main Methods:
- Fabrication of two types of silicon-based metasurfaces.
- Utilizing conventional thin-film silicon processing techniques.
- Demonstration in both transmission and reflection modes.
Main Results:
- Successful steering of visible light to large deflection angles.
- High diffraction efficiencies maintained over a broad range of angles of incidence.
- Demonstrated functionality in both transmission and reflection configurations.
Conclusions:
- The developed silicon metasurfaces overcome previous angular limitations.
- These structures are suitable for large-scale fabrication of high-performance optical devices.
- The technology enables advanced light manipulation with ultrathin components.
