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Related Experiment Video

Updated: Aug 18, 2025

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator

Published on: January 28, 2019

Topological beaming of light.

Ki Young Lee¹, Seungjin Yoon², Seok Ho Song¹

¹Department of Physics, Hanyang University, Seoul, 133-791, Republic of Korea.

Science Advances

|December 9, 2022

Summary

This summary is machine-generated.

We developed a novel topological beam emitter for efficient light emission. This compact device offers adaptable beam shaping and high efficiency for various photonic applications.

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Area of Science:

Photonics and Nanotechnology
Topological Physics

Background:

Nanophotonic light emitters are crucial for modern technologies due to their small size and flexibility.
Existing emitters face challenges in efficiency, beam control, and adaptability.

Purpose of the Study:

To propose a novel topological beam emitter structure.
To achieve submicrometer footprint, high efficiency, and adaptable beam shaping.
To leverage topological physics for enhanced light emission properties.

Main Methods:

Designing a topological junction of guided-mode resonance gratings.
Inducing a leaky Jackiw-Rebbi state resonance for optical confinement.
Controlling Dirac mass distribution via lattice geometry for beam shaping.

Main Results:

Demonstrated in-plane optical confinement with funnel-like energy flow.
Achieved enhanced emission probability and highly efficient optical beam emission.
Enabled adaptable beam shaping for desired profiles through geometric control.

Conclusions:

The proposed topological beam emitter offers superior performance for micro-light applications.
This technology is suitable for displays, LiDAR, sensors, and optical communications.
The design provides a versatile platform for next-generation photonic devices.