title: Hiding scattering layers for noninvasive imaging of hidden objects.
abstract: The ability to noninvasive image through turbid media has long been a major scientific and technological goal in many disciplines. A breakthrough has been made to observe objects that were completely hidden behind an opaque scattering layer. However, such approach needs not only to scan both illumination light and detector but further off-line procedures to numerically retrieve the image of the objects. Here, we report a distant invisibility-based noninvasive method that can hide scattering layers and allows to directly image objects behind. By recording holograms of the objects through a ground glass and then using the holograms produced time-reversal lights to re-illuminate the objects, we implemented to observe objects with feature size ranging from 39 μm to 80 μm that were hidden behind a 3 mm thick ground glass. Of importance, our approach opens a door towards real-time, high speed biomedical imaging and in-site inspection of integrated devices.
authors: 1] College of Electronic Science and Technology, Shenzhen University, Shenzhen 518060, China [2] School of Physics and Technology, Wuhan University, Wuhan 430072, China.
authors: Kedi
authors: K
authors: Wu
authors: School of Physics and Technology, Wuhan University, Wuhan 430072, China.
authors: Qiluan
authors: Q
authors: Cheng
authors: Institute of Information Optics, Zhejiang Normal University, Jinhua 321000, Zhejiang, P. R. China.
authors: Yile
authors: Y
authors: Shi
authors: Institute of Information Optics, Zhejiang Normal University, Jinhua 321000, Zhejiang, P. R. China.
authors: Hui
authors: H
authors: Wang
authors: 1] College of Electronic Science and Technology, Shenzhen University, Shenzhen 518060, China [2] School of Physics and Technology, Wuhan University, Wuhan 430072, China.
authors: Guo Ping
authors: GP
authors: Wang