Systems and methods for shear-corrected digital hologram acquisition
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United States of America Patent
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Aug 18, 2015
Grant Date -
Nov 17, 2011
app pub date -
May 13, 2011
filing date -
May 16, 2010
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Abstract
Systems and methods for shear-corrected digital hologram acquisition, wherein the shear-corrected geometry is highly suited for two (or more) color operation with either broadband or laser illumination. An apparatus for shear-corrected recording of a spatially heterodyne hologram with broad-band or laser illumination includes: an illumination source; a beamsplitter optically coupled to said illumination source(s); a reference beam corner-mirror pair for translation and phase-shaping of the object beam optically coupled to the beamsplitter; an object optically coupled to the beamsplitter; a focusing lens optically coupled to both the reference beam corner-mirror pair and the object; and a digital recorder optically coupled to the focusing lens. A reference beam is incident upon the translating and phase-shaping corner-mirror pair, and the reference beam and an object beam are focused by the focusing lens at a focal plane of the digital recorder to form a spatially heterodyne hologram.
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