Systems and methods of dual-plane digital holographic microscopy
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United States of America Patent
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Oct 20, 2015
Grant Date -
Mar 21, 2013
app pub date -
Sep 16, 2011
filing date -
Sep 16, 2011
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Abstract
An embodiment of the disclosed DHM system includes a light source configured to emit coherent optical waves, a first optical Fourier element configured to Fourier transform the optical waves from the object area, wherein the Fourier transform occurs at a Fourier plane and the optical waves from the object area includes directly transmitted waves and diffracted waves, a phase modulator at the Fourier plane configured to introduce a phase delay between the directly transmitted waves and the diffracted waves, a second optical Fourier element configured to receive the directly transmitted waves and the diffracted waves from the phase modulator and to inversely Fourier transform the directly transmitted waves and the diffracted waves to provide interfered optical waves, and at least one imaging device configured to record the interfered optical waves at two image planes to generate a first interferogram and a second interferogram.
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