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An application of optical interference to dynamic position measurement in three dimensionsAllan, James Donald Campbell January 1988 (has links)
This thesis is concerned with the measurement of the positions of points and bodies moving in trajectories in three dimensions, and the use of a new technique of optical interference which allows such measurements to be made dynamically. A variety of existing techniques for both static and dynamic three-dimensional position measurement are discussed, and the design of the new interferometer is introduced. The geometry of points, curves and surfaces in three dimensions is examined, with emphasis on the intersection of the point loci represented by the coordinate output of measuring instruments. The coordinates output by the interferometer represent surface loci which are quadric surfaces. A method of calculating the position and orientation of a body using three quadric surface intersection curves is presented. Diffraction of monochromatic light at an aperture is considered and it is shown that an interferometer working by division of wavefront can be used to obtain continuous information about the movement of the source of radiation, with that source free to move in up to three dimensions. A lens may be used to produce a compact instrument based on these principles. The diffraction integral equations are modified to incorporate the effect of a lens in the diffraction field. It is shown that even complex lenses can be represented by a few parameters in the diffraction equations. From the evaluation of these diffraction integrals, it is shown how the movement of interference fringes provides a coordinate output and how this is related to the locus of the radiation source. A method of obtaining very high resolution measurements of interference fringe pattern movement is presented. The interferometer was built and tested and the above theory verified in practice in a series of optical bench tests. The implementation of a system which uses this interferometer to measure the dynamic performance of industrial robots is considered. The optimum positions for the instruments are derived, and the method of designing the interferometer to give the required resolution is presented.
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An instrument for the measurement of the spectrum of thermoelastic noise in sapphire.Hollitt, Christopher January 2007 (has links)
Title page, contents and abstract only. The complete thesis in print form is available from the University of Adelaide Library. / This thesis describes the design and construction of an instrument intended to measure the length noise present in optical materials. The detection of thermoelastic noise in sapphire provides the initial motivation for the instrument, though the intent is to build a system capable of robustly characterising a variety of noise sources in multiple materials. Theoretical modelling is used to design a system that is expected to be dominated by thermoelastic noise. / http://proxy.library.adelaide.edu.au/login?url= http://library.adelaide.edu.au/cgi-bin/Pwebrecon.cgi?BBID=1295741 / Thesis (Ph.D.) -- University of Adelaide, School of Chemistry and Physics, 2007
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Modelling and experiments on the behaviour of injection current modulated multimode semiconductor lasers / by Kerry CorbettCorbett, Kerry January 1999 (has links)
Bibliography: p. 215-231. / v, 231 p. ; ill. ; 30 cm. / Title page, contents and abstract only. The complete thesis in print form is available from the University Library. / This thesis investigates the behaviour of semiconductor lasers under large amplitude sinusoidal current modulations. It focuses directly on the behaviour of Faby-Perot lasers under direct modulation of the injection current. / Thesis (Ph.D.)--University of Adelaide, Dept. of Physics and Mathematical Physics, 1999
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An instrument for the measurement of the spectrum of thermoelastic noise in sapphire.Hollitt, Christopher January 2007 (has links)
Title page, contents and abstract only. The complete thesis in print form is available from the University of Adelaide Library. / This thesis describes the design and construction of an instrument intended to measure the length noise present in optical materials. The detection of thermoelastic noise in sapphire provides the initial motivation for the instrument, though the intent is to build a system capable of robustly characterising a variety of noise sources in multiple materials. Theoretical modelling is used to design a system that is expected to be dominated by thermoelastic noise. / http://proxy.library.adelaide.edu.au/login?url= http://library.adelaide.edu.au/cgi-bin/Pwebrecon.cgi?BBID=1295741 / Thesis (Ph.D.) -- University of Adelaide, School of Chemistry and Physics, 2007
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Modelling and experiments on the behaviour of injection current modulated multimode semiconductor lasers /Corbett, Kerry. January 1999 (has links) (PDF)
Thesis (Ph.D.) -- University of Adelaide, Dept. of Physics and Mathematical Physics, 1999. / Bibliography: p. 215-231.
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Digital frequency demodulation for a laser vibrometer /Cronin, Christopher Joseph. January 1994 (has links)
Thesis (M.S.)--Virginia Polytechnic Institute and State University, 1994. / Vita. Abstract. Includes bibliographical references (leaf 75). Also available via the Internet.
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Optical microsystems in silicon based on a Fabry-Perot resonance cavity application for spectral analysis of visible light /Correia, José Higino Gomes, January 1900 (has links)
Thesis (Doctoral)--Technische Universiteit Delft, 1999. / Includes bibliographical references.
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The absorption of ultrasonic waves in liquidsQuirk, Arthur Lincoln, January 1934 (has links)
Thesis (Ph. D.)--Catholic University of America, 1934. / Vita.
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Optical microsystems in silicon based on a Fabry-Perot resonance cavity application for spectral analysis of visible light /Correia, José Higino Gomes, January 1900 (has links)
Thesis (Doctoral)--Technische Universiteit Delft, 1999. / Includes bibliographical references.
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Ni and rare-earth metals in-diffusion in LiNbO3 for waveguide application /Cheung, Chi-shing, Samuel. January 1998 (has links)
Thesis (M. Phil.)--University of Hong Kong, 1998. / Includes bibliographical references (leaves 70-74).
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