Surface characterization of a diamond turned XY sinusoidal grating

Testing of nonlinear diamond-turned reflaxicons.

The extreme alignment sensitivity of nonlinear diamond-turned reflaxicons makes them difficult to test and analyze. To evaluate the wave front it is necessary to know what portion results from alignment errors. This paper describes the setup, alignment, and testing of a nonlinear diamond-turned independent-element reflaxicon manufactured at the Union Carbide, Oak Ridge Y-12 plant. Interferogram...

Optical Figure Inspection of Diamond-Turned Metal Mirrors

This paper demonstrates that the optical testing of diamondturned surfaces is best accomplished by interferometry and not by tests which measure wavefront slope. Certain conditions regarding the interferometer configuration must be met in order to generate meaningful and accurate interferograms. A 40 cm diamete¡ aperture modified Mach-Zehnder interferometer mounted directly on the diamond-turni...

What is the depth of a sinusoidal grating?

Stereo matching of a textured surface is, in principle, ambiguous because of the quasi-repetitive nature of texture. Here, we used a perfectly repetitive texture, namely a sinusoidal grating, to examine human stereo matching for repetitive patterns. Observers matched the depth of a vertical grating segment, 6-deg wide and presented in a rectangular envelope at or near the disparity of the segme...

Surface Characterization of Hydrogenated Cvd Diamond Undergraduate Thesis

Morphological Characterization of Combustion Deposited Diamond Crystals and Films

Single crystals and polycrystalline diamond films of several thicknesses were deposited using oxygen/acetylene combustion flame technique. The substrate used was pure polycrystalline molybdenum subjected to mechanical polishing. Quality and microstructural characteristic of diamond produced were investigated using X-Ray diffraction, Raman Spectroscopy, Scanning and Transmission Electron Microsc...