Infrared acousto-optic tunable filter point spectrometer for detection of organics on mineral surfaces
作者： Rula Tawalbeh , David Voelz , David Glenar , Xifeng Xiao , Nancy Chanover
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摘要: Rula TawalbehDavid VoelzNew Mexico State UniversityLas Cruces, New 88003-0001E-mail: davvoelz@nmsu.eduDavid GlenarUniversity of MarylandBaltimore County1000 Hilltop CircleBaltimore, Maryland 21250Xifeng XiaoNancy ChanoverRobert HullNew 88003-0001David KuehnPittsburg University1701 South BroadwayPittsburg, Kansas 66762Abstract. A prototype infrared (IR) acousto-optic tunable filter (AOTF)-basedpoint spectrometer hasbeen designed forexamining andanalyzingpotentialbiologicalsamplescollectedinsitufromtheplanetsorothersolarsystem objects. The reflectance operates at a wavelengthrange 1.6 to 3.6 μm, which is diagnostic minerals and organics,and inspects 1-mm sized spot on the sample. tuning componentis AOTF that has been utilized in variety spectral detection appli-cations. instrument’s specification design approach including theselected components described. data acquisition system, elec-tronic components, their interconnections are presented. instru-ment’s radiometric performance examined described by noiseequivalent value 0.13% obtained from laboratorymeasurements. device demonstrated measuring thereflectance spectra for geological samples comparingthe results with United States Geological Survey data.
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