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5 March 2022 Dielectric-metasurface-enabled edge detection and quantitative phase imaging
Zhaowei Liu, Junxiao Zhou, Junxiang Zhao
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Proceedings Volume PC12011, High Contrast Metastructures XI; PC120110O (2022) https://doi.org/10.1117/12.2610302
Event: SPIE OPTO, 2022, San Francisco, California, United States
Abstract
Metasurfaces consisting of engineered nano-structures have shown exceptional abilities in light manipulation and have led to various practical applications. Using designed dielectric metasurfaces, we demonstrate spatial differentiation, a key aspect of optical analog signal processing, for broadband edge detection. Combined with quantum optics, the metasurface enabled spatial differentiator allows for edge detections with significantly higher signal to noise ratio compared to using classical optics. Furthermore, Fourier optical spin splitting microscopy based on a dielectric phase metasurface realizes single-shot quantitative phase gradient imaging. The proposed ideas pave the way for next generation high-speed real-time and multi-functional imaging.
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Zhaowei Liu, Junxiao Zhou, and Junxiang Zhao "Dielectric-metasurface-enabled edge detection and quantitative phase imaging", Proc. SPIE PC12011, High Contrast Metastructures XI, PC120110O (5 March 2022); https://doi.org/10.1117/12.2610302
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KEYWORDS
Edge detection
Dielectrics
Phase imaging
Image processing
Signal detection
Analog electronics
Data processing
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