KEYWORDS: Raman spectroscopy, Digital micromirror devices, Sensors, Detector arrays, Optical filters, Chemical species, Tablets, Micromirrors, Light scattering, In vivo imaging
We develop a high-speed compressive Raman imaging technology using a programmable binary spectral filter and a single channel detector to perform fast Raman imaging for detection and concentration estimation of know species over millimeters field of view. The technology enables Raman imaging with a pixel dwell time as short as few hundreds of microseconds. We report fast Raman imaging of pharmaceutical tablets and micro-plastics. We also present a novel fast line scan compressive Raman imaging scheme using the 2D digital micro-mirror device (DMD) to encode both space and frequency.
We develop a high speed compressive Raman imaging technology using a programmable binary spectral filter and a single channel detector to perform fast Raman detection and concentration estimation of know species over millimeter field of views with a pixel dwell time of few tens of µs only. The technology is x100 times faster than commercial CCD based systems and x10 times faster than the EMCCD based systems. We demonstrate rapid imaging of pharmaceutical tablets and microplastics.
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