Related Experiment Video
Updated: May 2, 2026
09:33
Demonstration of Equal-Intensity Beam Generation by Dielectric Metasurfaces
Published on: June 7, 2019
6.8K
Single-layer quadratic phase transmissive metasurface enabling wavelength-controlled lateral focus scanning.
Optics Letters
|March 13, 2026
Summary
This study introduces a novel metasurface (MS) for wavelength-controlled lateral focus scanning. This compact device offers precise, rapid optical beam steering without mechanical parts, ideal for advanced photonic applications.
Area of Science:
- Optics and Photonics
- Metamaterials
- Nanotechnology
Background:
- Metasurfaces offer advanced control over light properties.
- Achieving dynamic focus control often requires bulky or complex systems.
Purpose of the Study:
- To develop a single-layer metasurface for continuous, wavelength-controlled lateral focus scanning.
- To demonstrate precise and rapid focus positioning without mechanical actuation.
Main Methods:
- Design of a single-layer transmissive metasurface with a laterally translated quadratic phase profile.
- Experimental characterization of the metasurface across the C- and L-bands (1530–1600 nm).
Main Results:
- Demonstrated continuous lateral focus scanning controlled by incident wavelength.
- Achieved a lateral scan range of 321 µm with a stable focusing efficiency of ~55%.
- Exhibited a large depth of focus and stable performance across the operating wavelength range.
Conclusions:
- The proposed metasurface provides a compact, high-speed, and broadband platform for focal control.
- This technology enables vibration-free, precise optical beam steering for various applications.
