期刊
OPTICS EXPRESS
卷 23, 期 23, 页码 29639-29646出版社
OPTICAL SOC AMER
DOI: 10.1364/OE.23.029639
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资金
- NSFC [61120106001, 61322113, 61271134]
- young top-notch talent program - Ministry of Organization, China
- Tsinghua University Initiative Scientific Research Program
- State Environmental Protection Key Laboratory of Sources and Control of Air Pollution Complex [SCAPC201407]
- State Key Joint Laboratory of Environment Simulation and Pollution Control [14K10ESPCT]
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. (C) 2015 Optical Society of America
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