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dc.contributor.advisorSquier, Jeff A.
dc.contributor.authorCzerski, John
dc.contributor.committeememberBrice, Craig
dc.contributor.committeememberAdams, Daniel
dc.contributor.committeememberDurfee, Charles G.
dc.date.accessioned2021-09-13T10:22:16Z
dc.date.available2022-09-10T10:22:16Z
dc.date.issued2021
dc.descriptionIncludes bibliographical references.
dc.description2021 Summer.
dc.description.abstractIn the following thesis I present my work advancing the state of the art in spatial frequency modulation imaging (SPIFI). There are many imaging scenarios in which traditional segmented detectors are impractical. Segmented detectors become prohibitively expensive outside of commonly used wavelength ranges and are susceptible to scattering. In such cases, single element detectors provide access to a larger range of wavelengths and may remove scattering ambiguity; however, they require a method for coupling spatial information into temporal signals. SPIFI couples spatial information into temporal signals from a single element detector by modulating the spatial intensity distribution of light illuminating the sample. This work extends the utility of SPIFI by developing simple optimization algorithms for the modulation pattern, developing a fiber deliverable SPIFI system, two multi-dimensional SPIFI systems, and a single shot SPIFI system. The thesis is organized into six chapters. I begin with an introduction to single element imaging and SPIFI. In chapter two I describe how to optimize the SPIFI modulation pattern for various constraints such as the manufacturing resolution or the numeric aperture of an optical system. Chapter 3 describes the technique I developed for fiber deliverable SPIFI imaging: wavelength domain SPIFI. By modulating the spectrum of the illumination beam, wavelength domain SPIFI facilitates remote delivery via optical fiber or free space transmission. I provide theoretical analysis of wavelength domain SPIFI along with experimental validation of the technique and its compatibility with fiber delivery. Wavelength domain SPIFI can be combined with SPIFI along the perpendicular transverse dimension. In chapter 4 I present experimental realization of a two dimensional SPIFI system with spatial and wavelength modulation. I also demonstrate a scan free SPIFI system where the wavelength encoded axis is sampled with a linear CMOS detector. Chapter 5 presents initial results from wavelength multiplexed single shot SPIFI. This technique provides a valuable illumination scheme for phenomena that occur faster than the scan time of traditional SPIFI. I end the thesis by describing future work related to these techniques and presenting some concluding statements.
dc.format.mediumborn digital
dc.format.mediumdoctoral dissertations
dc.identifierCzerski_mines_0052E_12236.pdf
dc.identifierT 9194
dc.identifier.urihttps://hdl.handle.net/11124/176531
dc.languageEnglish
dc.publisherColorado School of Mines. Arthur Lakes Library
dc.relation.ispartof2021 - Mines Theses & Dissertations
dc.rightsCopyright of the original work is retained by the author.
dc.rights.accessEmbargo Expires: 09/10/2022
dc.subjectimaging
dc.subjectmicroscopy
dc.subjectlasers
dc.subjectFourier transform
dc.titleAdvances in spatial frequency modulation imaging: spatio-spectral encoding
dc.typeText
dcterms.embargo.expires2022-09-10
thesis.degree.disciplinePhysics
thesis.degree.grantorColorado School of Mines
thesis.degree.levelDoctoral
thesis.degree.nameDoctor of Philosophy (Ph.D.)


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