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Experimental demonstration of high space compression by optical spaceplates
Ryan Hogan1,2, Yaryna Mamchur3, R Margoth Córdova-Castro3
1National Key Laboratory of Solid State Microstructures, School of Physics, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Jiangsu, China. ryan.hogan@nju.edu.cn.
Nature Communications
|April 20, 2026
Summary
Researchers developed advanced optical spaceplates, achieving unprecedented space compression ratios. These compact devices significantly reduce the size of optical systems, enabling innovations in mobile cameras and telescopes.
Area of Science:
- Optics
- Materials Science
- Optical Engineering
Background:
- Large physical size limits optical system performance and deployment.
- Spaceplates offer a solution by compressing free-space propagation.
- Existing spaceplates have limitations in compression ratio and manufacturability.
Purpose of the Study:
- To demonstrate an engineered optical spaceplate with high space compression.
- To explore the potential for compact optical systems.
- To investigate multilayer stack fabrication for mass production.
Main Methods:
- Fabrication of a multilayer optical spaceplate.
- Experimental observation of space compression ratios.
- Characterization of bandwidth and angular range customization.
Main Results:
- Achieved the highest space compression ratios to date (R = 176 ± 14).
- Demonstrated a compression factor 29 times higher than previous devices.
- Utilized multilayer stack technology suitable for mass production.
Conclusions:
- Engineered multilayer spaceplates offer significant size reduction for optical systems.
- Customizable bandwidth and angular range enable versatile applications.
- Near-term applications include LIDAR, retinal scanners, and endoscopes.
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