ECE 299 Holography and Coherent Imaging

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Presentation transcript:

ECE 299 Holography and Coherent Imaging Lecture 2 Reconstructed wavefronts and communications theory David J. Brady Duke University Lecture 2. Leith Upatnieks Holography www.disp.duke.edu/~dbrady/courses/holography

Outline Holographic processes 4F systems Off axis holography Simulation of off axis holography Coding and holography Lecture 2. Leith Upatnieks Holography www.disp.duke.edu/~dbrady/courses/holography

The Holographic Process Defocusing or spatial frequency dispersion of the image Hologram recording Reconstruction Lecture 2. Leith Upatnieks Holography www.disp.duke.edu/~dbrady/courses/holography

Dispersion Process Lecture 2. Leith Upatnieks Holography www.disp.duke.edu/~dbrady/courses/holography

Dispersion Process Lecture 2. Leith Upatnieks Holography www.disp.duke.edu/~dbrady/courses/holography

Dispersion Process Lecture 2. Leith Upatnieks Holography www.disp.duke.edu/~dbrady/courses/holography

2. Recording the Hologram Lecture 2. Leith Upatnieks Holography www.disp.duke.edu/~dbrady/courses/holography

3. Reconstruction Lecture 2. Leith Upatnieks Holography www.disp.duke.edu/~dbrady/courses/holography

4F systems Lecture 2. Leith Upatnieks Holography www.disp.duke.edu/~dbrady/courses/holography

Off axis holography Lecture 2. Leith Upatnieks Holography www.disp.duke.edu/~dbrady/courses/holography

Spatial spectrum of off axis hologram Lecture 2. Leith Upatnieks Holography www.disp.duke.edu/~dbrady/courses/holography

Reconstruction of off axis hologram Lecture 2. Leith Upatnieks Holography www.disp.duke.edu/~dbrady/courses/holography

Experiment Lecture 2. Leith Upatnieks Holography www.disp.duke.edu/~dbrady/courses/holography

Modern Off Axis Holography Lecture 2. Leith Upatnieks Holography www.disp.duke.edu/~dbrady/courses/holography

Reconstruction Lecture 2. Leith Upatnieks Holography www.disp.duke.edu/~dbrady/courses/holography

Off axis hologram simulations Lecture 2. Leith Upatnieks Holography www.disp.duke.edu/~dbrady/courses/holography

Diffracted Field www.disp.duke.edu/~dbrady/courses/holography Lecture 2. Leith Upatnieks Holography www.disp.duke.edu/~dbrady/courses/holography

Hologram www.disp.duke.edu/~dbrady/courses/holography Lecture 2. Leith Upatnieks Holography www.disp.duke.edu/~dbrady/courses/holography

Reconstruction refAngle=Pi/20 Prop distance=7 mm Lecture 2. Leith Upatnieks Holography www.disp.duke.edu/~dbrady/courses/holography

Prop 5 mm www.disp.duke.edu/~dbrady/courses/holography Lecture 2. Leith Upatnieks Holography www.disp.duke.edu/~dbrady/courses/holography

Prop 1 mm www.disp.duke.edu/~dbrady/courses/holography Lecture 2. Leith Upatnieks Holography www.disp.duke.edu/~dbrady/courses/holography

Prop -5 mm www.disp.duke.edu/~dbrady/courses/holography Lecture 2. Leith Upatnieks Holography www.disp.duke.edu/~dbrady/courses/holography

Prop -7 mm www.disp.duke.edu/~dbrady/courses/holography Lecture 2. Leith Upatnieks Holography www.disp.duke.edu/~dbrady/courses/holography

Coding in off axis holograms Lecture 2. Leith Upatnieks Holography www.disp.duke.edu/~dbrady/courses/holography

Coding in off axis holograms Lecture 2. Leith Upatnieks Holography www.disp.duke.edu/~dbrady/courses/holography

Psuedo-random coding holography Lecture 2. Leith Upatnieks Holography www.disp.duke.edu/~dbrady/courses/holography

Reconstruction from pseudo-random reference Lecture 2. Leith Upatnieks Holography www.disp.duke.edu/~dbrady/courses/holography