Please use this identifier to cite or link to this item: https://doi.org/10.1364/oe.437594
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dc.titleCascaded, self-calibrated, single-pixel mid-infrared Hadamard transform spectrometer
dc.contributor.authorLim, Zi Heng
dc.contributor.authorQi, Yi
dc.contributor.authorZhou, Guangcan
dc.contributor.authorSenthil Kumar A.
dc.contributor.authorLee, Chengkuo
dc.contributor.authorZhou, Guangya
dc.date.accessioned2022-10-12T08:00:48Z
dc.date.available2022-10-12T08:00:48Z
dc.date.issued2021-09-01
dc.identifier.citationLim, Zi Heng, Qi, Yi, Zhou, Guangcan, Senthil Kumar A., Lee, Chengkuo, Zhou, Guangya (2021-09-01). Cascaded, self-calibrated, single-pixel mid-infrared Hadamard transform spectrometer. Optics Express 29 (21) : 34600-34615. ScholarBank@NUS Repository. https://doi.org/10.1364/oe.437594
dc.identifier.issn1094-4087
dc.identifier.urihttps://scholarbank.nus.edu.sg/handle/10635/232384
dc.description.abstractIn this paper, a single-pixel mid-infrared (mid-IR) Hadamard transform spectrometer is developed. The spectrometer's design, fabrication and experimental results are discussed. The single-pixel mid-IR Hadamard transform spectrometer has dual cascaded encoding regions, 2875 nm to 3500 nm and 3500 nm to 4077 nm, to reduce the travel range required by the moving mask. The encoded wavelength band is determined by the bandpass filter used. A collection optics consisting of a reverse spectrometer is used to collect the encoded signal onto a single-pixel detector with a small sensing area. A 635 nm laser is used as a reference within the spectrometer to calibrate the recovered spectrum with accurate positioning. Our experiments demonstrate that mid-IR spectrums can be accurately recovered in the designed wavelength range. The proposed spectrometer, with dimensions of 200mm × 200mm × 84mm and a weight of 1.8 kg, can be made portable and at low cost, suitable for IR spectroscopy in the field. © 2021 Optical Society of America.
dc.publisherThe Optical Society
dc.rightsAttribution 4.0 International
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.sourceScopus OA2021
dc.typeArticle
dc.contributor.departmentDEPT OF MECHANICAL ENGINEERING
dc.contributor.departmentCOLLEGE OF DESIGN AND ENGINEERING
dc.description.doi10.1364/oe.437594
dc.description.sourcetitleOptics Express
dc.description.volume29
dc.description.issue21
dc.description.page34600-34615
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