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Spin-Decoupled Transflective Spatial Light Modulations Enabled by a Piecewise-Twisted Anisotropic Monolayer.

Rui Yuan¹, Chun-Ting Xu¹, Han Cao¹

¹National Laboratory of Solid State Microstructures, Key Laboratory of Intelligent Optical Sensing and Manipulation, and College of Engineering and Applied Sciences, Nanjing University, Nanjing, 210023, China.

Advanced Science (Weinheim, Baden-Wurttemberg, Germany)

|June 6, 2022

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Researchers developed a novel spin-decoupled spatial light modulator using a unique anisotropic monolayer. This device enables independent control of reflected and transmitted light phases, unlocking multifunctionality for advanced planar optics and optical informatics applications.

Area of Science:

Optics and Photonics
Materials Science

Background:

Wavefront control is crucial in modern optics.
Existing technologies like metasurfaces and liquid crystals have limitations in efficiency, fabrication, and functionality.
Planar optics with spin-decoupled functions are needed for enhanced multifunctionality.

Purpose of the Study:

To present a novel spin-decoupled transflective spatial light modulator.
To demonstrate independent phase control for reflected and transmitted light.
To explore advanced functionalities in planar optics.

Main Methods:

Utilized a piecewise-twisted anisotropic monolayer.
Engineered periodic helix and mirror-symmetric dual-twist configurations.
Demonstrated a transflective orbital angular momentum encoder and decoder.

Keywords:

liquid crystal planar optics spatial light modulation

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Main Results:

Achieved independent phase customization for reflected and transmitted light.
Successfully demonstrated a transflective orbital angular momentum encoder and decoder.
Showcased compatibility with different multiplexing techniques.

Conclusions:

The developed device releases the multifunctionality of advanced planar optics.
This technology has the potential to upgrade existing devices in optical informatics.
Enables unprecedented control over light polarization and phase for advanced optical applications.