Virginia TechPost, Daniel2014-04-042014-04-041979-11-01Daniel Post, "Moiré interferometry with white light," Appl. Opt. 18, 4163-4167 (1979). doi: 10.1364/ao.18.0041630003-6935http://hdl.handle.net/10919/46937While high-sensitivity moiré interferometry requires monochromatic light, an auxiliary compensator grating removes the requirement. Experimental verification utilized white light for moiré interference of sensitivity 0.833 μm/fringe. Configurations readily amenable to compensation include moiré fringe multiplication by even factors and the minimum-deviation arrangement. Chromatic compensation is effective with virtual reference gratings as well as real reference gratings; in both cases the moiré interference system becomes achromatic. Compensation provides the special quality of nearly zero phase difference—an actual range of ±π—between interfering beams. Potential applications include use of electrical spark light sources for high-sensitivity dynamic moiré photography.application/pdfen-USIn CopyrightArticle - Refereedhttp://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-18-24-4163https://doi.org/10.1364/ao.18.004163