title: Compressive sensing based high-speed time-stretch optical microscopy for two-dimensional image acquisition.
abstract: In this paper, compressive sensing based high-speed time-stretch optical microscopy for two-dimensional (2D) image acquisition is proposed and experimentally demonstrated for the first time. A section of dispersion compensating fiber (DCF) is used to perform wavelength-to-time conversion and then ultrafast spectral shaping of broadband optical pulses can be achieved via high-speed intensity modulation. A 2D spatial disperser comprising a pair of orthogonally oriented dispersers is employed to produce spatially structured illumination for 2D image acquisition and a section of single mode fiber (SMF) is utilized for pulse compression in the optical domain. In our scheme, a 1.2-GHz photodetector and a 50-MHz analog-to-digital converter (ADC) are used to acquire the energy of the compressed pulses. Image reconstructions are demonstrated at a frame rate of 500 kHz and a sixteen-fold image compression is achieved in our proof-of-concept demonstration.
authors.forename: Qiang
authors.initials: Q
authors.lastname: Guo
authors.forename: Hongwei
authors.initials: H
authors.lastname: Chen
authors.forename: Zhiliang
authors.initials: Z
authors.lastname: Weng
authors.forename: Minghua
authors.initials: M
authors.lastname: Chen
authors.forename: Sigang
authors.initials: S
authors.lastname: Yang
authors.forename: Shizhong
authors.initials: S
authors.lastname: Xie