讲座题目：Developing Next Generation Multidimensional Optical Imaging Devices
主讲人：Dr. Liang Gao
主持人：张诗按研究员
讲座时间：2016.11.119:30
讲座地点：理科大楼A814室
报告人简介：
WORK EXPERIENCE
June 2016 — Current, Assistant Professor, University of Illinois at Urbana Champaign;Jan 2015 — June 2016, Advisory Research Scientist, Ricoh Research; 2011 — 2015, Postdoc Research Associate, Washington University in St. Louis.
RESEARCH INTERESTS
Mutidimensional imaging technologies（ Light field imaging; Hyperspectral imaging; Ultrafast imaging）
Near-eye 3D display( Augmented-reality 3D display; Virtual-reality 3D display)
Biomedical optics(Photoacoustic tomography and microscopy; Super-resolution microscopy; Fluorescence microscopy and endoscopy)
报告摘要：
When performing optical measurement with a limited photon budget, it is important to assure that each detected photon is as rich in information as possible. Conventional optical imaging systems generally tag light with just two characteristics (x, y), measuring its intensity in a 2D (x, y) lattice.However, this throws away much of the information content actually carried by a photon. Thisinformation can be written as (x, y, z, θ, φ, λ, t, ψ, χ): the spatial coordinates (x, y, z) are in 3D, the propagation polar angles (θ, φ) are in 2D, and the wavelength (λ), emission time (t), and polarization orientation and ellipticity angles (ψ, χ) are in 2D.Neglecting coherence effects, a photon thus carries with it nine tags. In order to explore this wealth of information, an imaging system should be able to characterize measured photons in 9D, rather than in 2D.
This presentation will provide an overview of the next generation of multidimensional optical imaging devices which leverage advances in computational optics, micro-fabrication, and detector technology.The resultant systems can simultaneously capture multiple photon tags in parallel, thereby maximizing the information content we can acquire from a single camera exposure.In particular, I will discuss our recent development of two game-changing technologies—a snapshot hyperspectral imager, image mapping spectrometer (IMS), and an ultrafast imager, compressed ultrafast photography (CUP)—and how these techniques can potentially revolutionize our sensation of surrounding world.