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George Barbastathis. Watson, Jonathan M Massachusetts Institute of Technology. Dept. of Mechanical Engineering. Massachusetts Institute of Technology. Department of Mechanical Engineering 2009-03-16T19:51:29Z 2009-03-16T19:51:29Z 2008 2008 http://hdl.handle.net/1721.1/44854 301735256 Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2008. Includes bibliographical references (leaves 144-148). In this thesis, the properties of transmission-mode volume phase holograms as spatial-spectral filters in optical systems for microscopic medical imaging are evaluated. In experiment, the relationship between the angle of incidence and diffraction efficiency are invesitgated for wavelength-detuned multiplex holograms to establish the limits of the narrow bandwidth lateral field of view. The depth selectivity of the microscope with a volume hologram pupil is also measured and found to vary significantly with recording parameters and lateral shift of the probe point source in object space. This experiment is modified to incorporate controlled levels of spherical aberration, where the effect on the depth selectivity is evaluated. A novel resolution target designed specifically for the evaluation of this imaging system is described and imaged. A flexible approach based on the 1st-order Born approximation is implemented to simulate all aspects of the imaging system with a multiplex volume hologram pupil. The simulation is then used to verify and expand upon the experimental results. A mathematical treatment of the nature of the anomalous apparent curvature of the diffraction image is performed, showing that a volume grating recorded in plane has weak out-of-plane spatial filtering behavior. by Jonathan M. Watson. S.M. 171 leaves eng Massachusetts Institute of Technology M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission. http://dspace.mit.edu/handle/1721.1/7582 Mechanical Engineering. Evaluation of spatial-spectral filtering in non-paraxial volume holographic imaging systems Thesis application/pdf Publication unknown unknown <Publication xmlns="https://www.openaire.eu/cerif-profile/1.1/" id="ba23f750-8283-47a4-a54d-d440d0d99ef1"> <Type xmlns="https://www.openaire.eu/cerif-profile/vocab/COAR_Publication_Types">http://purl.org/coar/resource_type/c_1843</Type> <Language>eng</Language> <Title>Evaluation of spatial-spectral filtering in non-paraxial volume holographic imaging systems</Title> <PublishedIn> <Publication> </Publication> </PublishedIn> <PublicationDate>2008</PublicationDate> <Authors> <Author> <DisplayName>Watson, Jonathan M</DisplayName> <Affiliation> <OrgUnit> </OrgUnit> </Affiliation> </Author> </Authors> <Editors> </Editors> <Publishers> <Publisher> <DisplayName>Massachusetts Institute of Technology</DisplayName> <OrgUnit /> </Publisher> </Publishers> <License>http://dspace.mit.edu/handle/1721.1/7582</License> <Keyword>Mechanical Engineering.</Keyword> <Abstract>In this thesis, the properties of transmission-mode volume phase holograms as spatial-spectral filters in optical systems for microscopic medical imaging are evaluated. In experiment, the relationship between the angle of incidence and diffraction efficiency are invesitgated for wavelength-detuned multiplex holograms to establish the limits of the narrow bandwidth lateral field of view. The depth selectivity of the microscope with a volume hologram pupil is also measured and found to vary significantly with recording parameters and lateral shift of the probe point source in object space. This experiment is modified to incorporate controlled levels of spherical aberration, where the effect on the depth selectivity is evaluated. A novel resolution target designed specifically for the evaluation of this imaging system is described and imaged. A flexible approach based on the 1st-order Born approximation is implemented to simulate all aspects of the imaging system with a multiplex volume hologram pupil. The simulation is then used to verify and expand upon the experimental results. A mathematical treatment of the nature of the anomalous apparent curvature of the diffraction image is performed, showing that a volume grating recorded in plane has weak out-of-plane spatial filtering behavior.</Abstract> <Access xmlns="http://purl.org/coar/access_right" > </Access> </Publication>