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ECE 299 Holography and Coherent Imaging

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Presentation on theme: "ECE 299 Holography and Coherent Imaging"— Presentation transcript:

1 ECE 299 Holography and Coherent Imaging
Lecture 2 Reconstructed wavefronts and communications theory David J. Brady Duke University Lecture 2. Leith Upatnieks Holography

2 Outline Holographic processes 4F systems Off axis holography
Simulation of off axis holography Coding and holography Lecture 2. Leith Upatnieks Holography

3 The Holographic Process
Defocusing or spatial frequency dispersion of the image Hologram recording Reconstruction Lecture 2. Leith Upatnieks Holography

4 Dispersion Process Lecture 2. Leith Upatnieks Holography

5 Dispersion Process Lecture 2. Leith Upatnieks Holography

6 Dispersion Process Lecture 2. Leith Upatnieks Holography

7 2. Recording the Hologram
Lecture 2. Leith Upatnieks Holography

8 3. Reconstruction Lecture 2. Leith Upatnieks Holography

9 4F systems Lecture 2. Leith Upatnieks Holography

10 Off axis holography Lecture 2. Leith Upatnieks Holography

11 Spatial spectrum of off axis hologram
Lecture 2. Leith Upatnieks Holography

12 Reconstruction of off axis hologram
Lecture 2. Leith Upatnieks Holography

13 Experiment Lecture 2. Leith Upatnieks Holography

14 Modern Off Axis Holography
Lecture 2. Leith Upatnieks Holography

15 Reconstruction Lecture 2. Leith Upatnieks Holography

16 Off axis hologram simulations
Lecture 2. Leith Upatnieks Holography

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

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

19 Reconstruction refAngle=Pi/20 Prop distance=7 mm
Lecture 2. Leith Upatnieks Holography

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

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

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

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

24 Coding in off axis holograms
Lecture 2. Leith Upatnieks Holography

25 Coding in off axis holograms
Lecture 2. Leith Upatnieks Holography

26 Psuedo-random coding holography
Lecture 2. Leith Upatnieks Holography

27 Reconstruction from pseudo-random reference
Lecture 2. Leith Upatnieks Holography

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