320 citations · 437 across the 6 of their papers we have counts for
6 papers
Compound Super-oscillation Lens for Reflective Confocal Imaging
Pengcheng Zheng, Zhaoxiang Zhu, Xiangcan Pei +5
The super-oscillation lens (SOL) can achieve super-resolution focusing but have to trade-off with weaker hotspots and higher sidebands. We propose a single compound SOL to achieve…
An Ultra-high Numerical Aperture Metalens at Visible Wavelengths
Haowen Liang, Qiaoling Lin, Xiangsheng Xie +8
We demonstrate a metalens with NA = 0.98 in air, a bandwidth (FWHM) of 274 nm and a focusing efficiency of 67% at 532 nm wavelength, which is close to the transmission performance…
Imaging of objects through a thin scattering layer using a spectrally and spatially separated reference
Xiaoqing Xu, Xiangsheng Xie, Abhilash Thendiyamma +5
Incoherently illuminated or luminescent objects give rise to a low-contrast speckle-like pattern when observed through a thin diffusive medium, as such a medium effectively convolv…
3D Object Imaging through Scattering Media
Xiangsheng Xie, Huichang Zhuang, Hexiang He +4
Human ability to visualize an image is usually hindered by optical scattering. Recent extensive studies have promoted imaging technique through turbid materials to a reality where…
Imaging objects through scattering layers and around corners by retrieval of the scattered point spread function
Xiaoqing Xu, Xiangsheng Xie, Hexiang He +4
We demonstrate a high-speed method to image objects through a thin scattering medium and around a corner. The method employs a reference object of known shape to retrieve the speck…
Nonlinear light propagation in cholesteric liquid crystals with a helical Bragg microstructure
Yikun Liu, Shenhe Fu, Xing Zhu +7
Nonlinear optical propagation in cholesteric liquid crystals (CLC) with a spatially periodic helical molecular structure is studied experimentally and modeled numerically. This per…