Exploring the challenges of a far-infrared post-dispersed polarising Fourier transform spectrometer

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dc.contributor.authorHuber, Anthony Irving
dc.contributor.authorUniversity of Lethbridge. Faculty of Arts and Science
dc.contributor.supervisorNaylor, David A.
dc.date.accessioned2021-10-20T19:10:40Z
dc.date.available2021-10-20T19:10:40Z
dc.date.issued2021
dc.degree.levelMastersen_US
dc.description.abstractRecent advances in superconducting far-infrared (FIR) bolometer detectors have resulted in increases to their sensitivity of at least two orders of magnitude over broadband detectors flown on previous far-infrared spaceborne astronomy instruments. Such sensitivity means that observations employing a Fourier transform spectrometer (FTS) will require techniques to reduce the spectral bandwidth of a detector to limit the photon noise. The proposed SPICA SAFARI instrument employs grating spectrometers to post-disperse the light that has been modulated by a polarizing FTS onto a detector array: a post-dispersed polarizing FTS (PDPFTS). This thesis presents the development of a FIR PDPFTS consisting of a FTS and grating spectrometer. The challenges of phase correction given the narrow bandwidth of the PDPFTS were explored and a technique was developed for reliable phase correction. The results show that the PDPFTS works as predicted, and allows one to recover a broadband spectrum at high resolution.en_US
dc.identifier.urihttps://hdl.handle.net/10133/6068
dc.language.isoen_USen_US
dc.proquest.subject0752en_US
dc.proquest.subject0605en_US
dc.proquest.subject0606en_US
dc.proquestyesYesen_US
dc.publisherLethbridge, Alta. : University of Lethbridge, Dept. of Physics and Astronomyen_US
dc.publisher.departmentDepartment of Physics and Astronomyen_US
dc.publisher.facultyArts and Scienceen_US
dc.relation.ispartofseriesThesis (University of Lethbridge. Faculty of Arts and Science)en_US
dc.subjectopticsen_US
dc.subjectastronomyen_US
dc.subjectfar-infrareden_US
dc.subjectFourier transform spectrometeren_US
dc.subjectgrating spectrometeren_US
dc.subjectphase correctionen_US
dc.subjectOpticsen_US
dc.subjectAstronomyen_US
dc.subjectFourier transform infrared spectroscopyen_US
dc.subjectOptical spectrometersen_US
dc.subjectSpectrum analysis -- Instrumentsen_US
dc.subjectAstronomical spectroscopy -- Instruments -- Design and constructionen_US
dc.subjectLow temperature engineeringen_US
dc.subjectDissertations, Academicen_US
dc.titleExploring the challenges of a far-infrared post-dispersed polarising Fourier transform spectrometeren_US
dc.typeThesisen_US
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