Development of the dispersing component for a cryogenic post-dispersed polarizing Fourier transform spectrometer

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dc.contributor.authorAnderson, Alicia May
dc.contributor.authorUniversity of Lethbridge. Faculty of Arts and Science
dc.contributor.supervisorNaylor, David A.
dc.date.accessioned2022-05-27T22:37:34Z
dc.date.available2022-05-27T22:37:34Z
dc.date.issued2022
dc.degree.levelMastersen_US
dc.description.abstractRecent advances in far-infrared detector technology have led to increases in raw sensitivity of more than an order of magnitude over previous state-of-the-art detectors. With such sensitivity, photon noise becomes the dominant noise component, even when using cryogenically cooled optics, unless a method of restricting the spectral bandpass is employed. The leading instrument concept features reflecting grating spectrometers to post-disperse the light that has been modulated by a polarizing Fourier transform spectrometer (FTS) onto a detector array, thereby reducing the photon noise on each detector. This thesis discusses the development of a cryogenic (4 K) reflection grating spectrometer which operates over the wavelength range from 285 - 500 µm and was used to post-disperse the output from a room-temperature polarizing FTS. Measurements of the grating spectral response and diffraction efficiency are presented as a function of both wavelength and polarization to characterize the instrumental performance.en_US
dc.identifier.urihttps://hdl.handle.net/10133/6214
dc.language.isoen_USen_US
dc.proquest.subject0605en_US
dc.proquest.subject0596en_US
dc.proquest.subject0606en_US
dc.proquestyesYesen_US
dc.publisherLethbridge, Alta. : University of Lethbridge, Dept. of Physics and Astonomyen_US
dc.publisher.departmentDepartment of Physics & Astronomyen_US
dc.publisher.facultyArts and Scienceen_US
dc.relation.ispartofseriesThesis (University of Lethbridge. Faculty of Arts and Science)en_US
dc.subjectfar infrareden_US
dc.subjectFourier transform spectrometeren_US
dc.subjectdiffraction efficiencyen_US
dc.subjectdiffraction gratingen_US
dc.subjectastronomy and astrophysicsen_US
dc.subjectcryogenic instrumentationen_US
dc.subjectFourier transform infrared spectroscopyen_US
dc.subjectLow temperature engineeringen_US
dc.subjectDiffraction gratings--Design and constructionen_US
dc.subjectInfrared astronomy--Instruments--Design and constructionen_US
dc.subjectSubmillimeter astronomy--Instruments--Design and constructionen_US
dc.subjectDissertations, Academicen_US
dc.titleDevelopment of the dispersing component for a cryogenic post-dispersed polarizing Fourier transform spectrometeren_US
dc.typeThesisen_US
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