Synthetic optical holography

Martin Schnell (Inventor), Rainer Hillenbrand (Inventor), Paul Scott Carney (Inventor)

Research output: Patent


Methods and apparatus for imaging a phase or amplitude that characterizes a scattered field emanating from a physical medium. A local probe is stepped to a plurality of successive probe positions and illuminated with an illuminating beam, while a specified phase function is imposed on a reference beam relative to the illuminating beam. A field associated with the scattered field is superimposed with the reference beam and the detection of both yields a detected signal which is recorded as a function of probe position in order to obtain a hologram. The holograph is transformed, filtered, and retransformed to generate an image. Alternatively, the illuminating beam may directly illuminate successive positions of the physical medium.
Original languageEnglish (US)
U.S. patent number9213313
StatePublished - Dec 15 2015


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