Scanning Fourier transform spectrometer in the visible range based on birefringent wedges
نویسندگان
چکیده
منابع مشابه
Birefringent Fourier-transform imaging spectrometer.
Fourier-transform imaging spectrometers offer important advantages over other spectral imaging modalities, such as, a wider free spectral range, higher spectral resolutions and, in low-photon-flux conditions, higher signal-to-noise ratios can be achieved. Unfortunately, for application in harsh environments, deployment of Fourier-transform instruments based on traditional moving-mirror interfer...
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We present a miniaturized Fourier transform spectrometer (FTS) based on optical microelectromechanical system technology. The FTS is a Michelson interferometer with one scanning mirror. A new type of electrostatic comb drive actuator moves the mirror. We have measured a nonlinearity of the driving system of +/-0.5 mum for a displacement of 38.5 mum . A method is presented to correct the spectru...
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A Fourier transform spectrometer (FTS) that incorporates a closed-loop controlled, electrothermally actuated microelectromechanical systems (MEMS) micromirror is proposed and experimentally verified. The scan range and the tilting angle of the mirror plate are the two critical parameters for MEMS-based FTS. In this work, the MEMS mirror with a footprint of 4.3 mm × 3.1 mm is based on a modified...
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Rapid scanning serves to mitigate the problems of scintillation and dynamic range for Fourier spectrometry, as well as to simplify the measurement procedures. Rapid scanning means scanning at a rate such that the interferometric fringes act as their own chopper. It also means scanning at a rate such that the fringe frequencies exceed the scintillation frequencies, thereby avoiding confusion bet...
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The NASA New Millennium Program’s Geostationary Imaging Fourier Transform Spectrometer (GIFTS) requires highly accurate radiometric and spectral calibration in order to carry out its mission to provide water vapor, wind, temperature, and trace gas profiling from geostationary orbit. A calibration concept has been developed for the GIFTS Phase A instrument design. The in-flight calibration is pe...
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ژورنال
عنوان ژورنال: Journal of the Optical Society of America A
سال: 2016
ISSN: 1084-7529,1520-8532
DOI: 10.1364/josaa.33.001415