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High-speed inline holographic Stokesmeter imaging
Applied Optics, 2009We demonstrate a high-speed inline holographic Stokesmeter that consists of two liquid crystal retarders and a spectrally selective holographic grating. Explicit choices of angles of orientation for the components in the inline architecture are identified to yield higher measurement accuracy than the classical architecture.
Xue, Liu +3 more
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High-speed multispectral confocal imaging
SPIE Proceedings, 2013A new approach for generating high-speed multispectral images has been developed. The central concept is that spectra can be acquired for each pixel in a confocal spatial scan by using a fast spectrometer based on optical fiber delay lines. This concept merges fast spectroscopy with standard spatial scanning to create datacubes in real time.
Gary E. Carver +3 more
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High speed time-resolving imaging
Technical Digest. CLEO/Pacific Rim '99. Pacific Rim Conference on Lasers and Electro-Optics (Cat. No.99TH8464), 2003In order to obtain a high depth resolution, not only the use of a fast shutter, but also the use of a fast modulated chirped pulse is necessary. A chirped pulse of wide spectrum range is necessary, therefore a wide band shutter is also needed. Shutters faster than CS/sub 2/ were realized using other materials such as glasses or organic dyes. We applied
H. Matsumoto, K. Minoshima
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High-speed imaging chopper polarimetry
Optical Engineering, 2008The Stokes method provides a seminal method for the determination of the state of polarization of a beam of light using measurable quantities. This paper presents a methodology for the rapid acquisition of the four Stokes parameters. We have been able to acquire images at the rate of 500 images per second using a high-speed video camera.
Roy M. Matchko, Grant R. Gerhart
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High-speed fluorescence lifetime imaging
SPIE Proceedings, 2004In Fluorescence Lifetime Imaging (FLIM) the ns fluorescence decay is used for imaging. It yields information about the local environment of the fluorescent molecule and is very well suited for quantitative imaging. FLIM was introduced more than one decade ago now.
Gerritsen, H.C. +2 more
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High-speed mixture fraction imaging
Applied Physics B, 2009Advances in high-speed laser and camera technology have made scientific kHz repetition rate combustion and flow laser diagnostics feasible. While quantitative flow-field results have been shown to be possible via PIV, measuring scalars relevant to combustion such as mixture fraction, temperature and species concentrations is still a significant ...
R. L. Gordon, C. Heeger, A. Dreizler
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High speed imaging polarimeter
2012We have implemented a portable high-speed imaging polarimeter using a single ferroelectric liquid crystal cell. The originality of this work lies in the fact that we do not work at the nominal wavelength of the cell. Consequently we obtain the full polarimetric information (i.e. the Stokes vector) with only one modulator.
Marconnet, Pierre +3 more
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High speed imaging technique Part 1 – high speed imaging of arc welding phenomena
Science and Technology of Welding and Joining, 2011A high speed imaging technique is an attractive tool to elucidate arc welding phenomena. In this study, applications of this technique have been reviewed to aid understanding of arc welding phenomena. Laser illumination with narrow band interference filter is useful to reduce output power of external light.
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High speed terahertz reflection imaging
SPIE Proceedings, 2005Terahertz imaging has shown great potential in several biomedical areas such as burn imaging, detection of skin cancer, and pharmaceutical tablet imaging. The development of each of these application has been limited by slow imaging speed (tens of minutes to hours) and small scan areas (less than 10 square centimeters). Elsewhere to date, the sample
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High-speed compressive Raman imaging
2023We 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.
Rigneault, Hervé +2 more
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