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Updated: Dec 31, 2025
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Demonstration of Equal-Intensity Beam Generation by Dielectric Metasurfaces
Published on: June 7, 2019
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Metasurface-integrated vertical cavity surface-emitting lasers for programmable directional lasing emissions.
Yi-Yang Xie1, Pei-Nan Ni2, Qiu-Hua Wang1
1Key Laboratory of Optoelectronics Technology, Beijing University of Technology, Ministry of Education, Beijing, China.
Nature Nanotechnology
|January 15, 2020
Summary
Researchers integrated dielectric metasurfaces with vertical cavity surface-emitting lasers (VCSELs) to achieve arbitrary laser beam shaping. This compact, efficient technology enables advanced applications like LiDAR and optical communications.
Area of Science:
- Optoelectronics and Photonics
- Metamaterials and Nanophotonics
Background:
- Vertical cavity surface-emitting lasers (VCSELs) are crucial in modern optoelectronics.
- Achieving arbitrary beam shaping in compact VCSEL systems has been a significant challenge.
- Metasurfaces offer precise electromagnetic field manipulation at the subwavelength scale.
Purpose of the Study:
- To demonstrate arbitrary control over VCSEL laser beam profiles using integrated dielectric metasurfaces.
- To develop a compact and efficient solution for advanced beam shaping applications.
Main Methods:
- Monolithic integration of dielectric metasurfaces with VCSELs.
- Utilizing VCSEL-compatible wafer-level fabrication technology.
- Characterization of laser beam profiles, including self-collimation, Bessel, and Vortex beams.
Main Results:
- Successfully achieved arbitrary control of laser beam profiles with high efficiency.
- Demonstrated the generation of self-collimated, Bessel, and Vortex laser beams.
- Wafer-level integration simplified assembly and maintained high VCSEL performance.
Conclusions:
- Monolithic integration of dielectric metasurfaces with VCSELs provides unprecedented control over laser beam shaping.
- This approach offers a compact, efficient, and scalable solution for advanced optoelectronic applications.
- Potential applications include optical communications, LiDAR, sensing, and display technologies.
