320 citations · 653 across the 14 of their papers we have counts for
14 papers
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…
Ultrafast Optical Signal Processing with Bragg Structures
Yikun Liu, Shenhe Fu, Boris A. Malomed +2
The phase, amplitude, speed, and polarization, in addition to many other properties of light, can be modulated by photonic Bragg structures. In conjunction with nonlinearity and qu…
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…