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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 101 for “"index of refraction"”.
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Index of refraction of nickel at high temperatures
Call number: LD2668 .T4 1953 W57
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Index of refraction of nickel at high temperatures
Call number: LD2668 .T4 1953 W57
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The Preparation of Certain Index of Refraction Liquids
<p>The increasing importance of index of refraction liquids in nonopaque mineral determination is stressed, with the fact that sets of index liquids are relatively easy to make with a few media and simple equipment. The desired features of an immersion series are listed. </p><p>The end members …
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Design and manufacturing of all-dielectric optical metamaterial with gradient index of refraction
Gradient index (GRIN) materials offer the most general manipulation over wave fields of light compared to conventional refractive optics, where the light is deflected by the curved surface. The creative way to implementing GRIN optics is to construct a subwavelength structure with the …
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INVESTIGATION OF THE NONLINEAR INDEX OF REFRACTION OF WATER AT 815 AND 407 NANOMETERS
… The technique was used to measure the nonlinear index of refraction due to the optical Kerr effect in water at both 815 nm and 407 nm with pump pulse lengths of ~90 femtoseconds and ~250 femtoseconds respectively. The 815 nm measurement serves as a benchmark against previous published values …
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Measuring decoherence and the matter-wave index of refraction with an improved atom interferometer
… isolated platform which has reduced rms motion of the gratings by a factor of two. The arrangement of gratings on the platform can be reconfigured at will, and the entire platform removed from the vacuum chamber for purposes of alignment. We have performed a series of experiments related to …
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Atom interferometry--dispersive index of refraction and rotation induced phase shifts for matter-waves
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 1997.
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A new technique to find both real and imaginary index of refraction of atmospheric aerosols from clear sky radiance measurements.
… technique to find both the real and imaginary index of refraction of atmospheric aerosols has been developed which utilizes polarized sky radiance measurements in the solar principal plane. The technique requires that the aerosol size distribution, Rayleigh optical depth, aerosol optical depth, …
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Analysis of the single scatter albedo and imaginary index of refraction of fused silica nanospheres via a photoacoustic technique and a novel aerosol generator
… the single scatter albedo (SSA) and imaginary index of refraction of 300nm fused silica spheres using the in-situ technique of photoacoustic spectroscopy. Through the use of a novel aerosol generator, sample aerosol streams were generated and sampled via a 4 wavelength photoacoustic …
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The Development of a Novel Femtosecond Xuv Light Source to Do Spectroscopy of Atoms and Molecules.
… and/or dissociate a molecular medium. The static index of refraction of the medium, which represents the medium response to a weak field, is no longer valid for describing the response to a strong field. The dynamic nonlinear index of refraction depends very strongly on the intensity of the …
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Measuring atomic properties with an atom interferometer
… the sodium de Broglie wave into two paths, one of which travels through an interaction region. The paths are recombined, and the interference pattern exhibits a phase shift depending on the strength of the interaction. In the first experiment, the interaction involves a gas. De Broglie waves …
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Fabrication of resonant optical waveguide biosensors using electron gun depositions
… the chemical and physical worlds through the use of a transducer, allowing for quick detection of numerous biological agents. A new biosensor being developed, the resonant optical waveguide biosensor, uses power transfer between two optical waveguides to detect the presence of an antigen. The …
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Radiative heat transfer from aluminum oxide in solid propellant flames
… produced from the distributed combustion of aluminum droplets, dominated the optical characteristics of aluminized propellant flames. A laser scattering and extinction technique was developed to determine the optical properties of liquid Al$\sb2$O$\sb3$ in the propellant flames at two …
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Novel Inorganic Photoresists for Three-Dimensional Microfabrication
… are attractive materials for the fabrication of complex microfluidic and micro-optical components such as chaotic mixing elements or 3D photonic crystals. Several inorganic photoresist systems have been developed or adapted for these purposes. The first resist system is based on silica …
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Theory of the optical properties of III-V semiconductor quantum wells
The aim of this project is to investigate the electronic and optical properties of III-V semiconductor quantum wells, specifically those based on the GaAs-AlGaAs system. Both the linear and non-linear optical properties of these systems are considered. A theoretical model for the refractive index …
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Determination of Bragg Scatter in an Aircraft Generated Wake Vortex System for Radar Detection
Remote detection and tracking of wingtip generated wake vortices is important for hazard avoidance especially near airports. Aircraft that fly through these hazardous vortices experience sudden induced roll. Experiments have demonstrated that there is sufficient radar cross section for remote …
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A modal/WKB inversion method for determining sound speed profiles in the ocean and ocean bottom
… to determining the ocean sound speed profile using measured acoustic modal eigenvalues are examined. Both methods use measured eigenvalues and mode dependent assumed values of the WKB phase integral as input data and use the WKB phase integral as a starting point for relating the index …
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Native oxides on aluminum-bearing III-V semiconductors with applications to single-mode behavior, bistability and switching
In this work, water vapor oxidation of Al-bearing III--V semiconductors is employed to form high quality native oxides. The native oxides described are formed at temperatures in the range of 400$\sp\circ$C to 450$\sp\circ$C. Some of the basic properties of the oxide are first described. The …
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Theoretical Study of the Transverse Dielectric Constant of Superlattices and Their Alloys (Refraction, Absorption)
The optical properties of III-V binary and ternary compounds and GaAs-Al(,x)Ga(,1-x)As superlattices are determined by calculating the real and imaginary parts of the transverse dielectric constant, (epsilon)((omega)) = (epsilon)(,1)((omega)) + i(epsilon)(,2)((omega)). Emphasis is given to …
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Brillouin scattering from opaque semiconducting alloys and thin films
… were measured in MBE grown single crystal films of A1xGal_xAs alloys and AlxGal_xAs -GaAs supedattices on GaAs substrates, and GaAs films grown on miscut Si substrates. To detect the Brillouin shifted light against the strong elastic background present in opaque materials, a tandem multipass …
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