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High-contrast wide-field evanescent wave illuminated subdiffraction imaging

Chenlei Pang, Xiaowei Liu, Minghua Zhuge, Xu Liu, Michael Geoffrey Somekh, Yiying Zhao, Di Jin, Weidong Shen, Haifeng Li, Lan Wu, Changhua Wang, Cuifang Kuang, and Qing Yang

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Abstract

In this Letter, we show how to obtain high-contrast wide-field evanescent wave illuminated subdiffraction imaging through controlling nanoscale light–matter interaction. The light coupling, propagation, and far-field imaging processes show strong polarization selectivity and film quality dependence, which is used to improve the image-contrast-to-noise ratio (CNR) and to enlarge the field of view (FOV). We demonstrate experimentally high CNR subdiffraction imaging with lateral resolution of 122 nm and FOV of thousands of micrometers square.

© 2017 Optical Society of America

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