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Report on Holography

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Seminar Report
On
Holography

Submitted By
Shipra Bassi

INDEX

1. Overview and history
2. Theory
2.1 Holographic recording process
2.2 Interference and diffraction
2.3 Plane wavefronts
2.4 Holographic reconstruction process
3. Mathematical model
4. Viewing the hologram
5. Holographic recording media
6. Comparision of holography with photography
7. Applications
7.1 Data storage
7.2 Security
7.3 Interferometric microscopy
7.4 Hobbyist use

1.OVERVIEW AND HISTORY
Holography (from the Greek, ὅλος hólos whole + γραφή grafē writing, drawing) is a technique that allows the light scattered from an object to be recorded and later reconstructed so that it appears as if the object is in the same position relative to the recording medium as it was when recorded. The image changes as the position and orientation of the viewing system changes in exactly the same way as if the object were still present, thus making the recorded image (hologram) appear three dimensional.

The technique of holography can also be used to optically store, retrieve, and process information. While holography is commonly used to display static 3-D pictures, it is not yet possible to generate arbitrary scenes by a holographic volumetric display.

Holography was invented in 1947 by the Hungarian-British physicist Dennis Gabor ,work for which he received the Nobel Prize in Physics in 1971. Pioneering work in the field of physics by other scientists including Mieczysław Wolfke resolved technical issues which previously had prevented advancement. The discovery was an unexpected result of research into improving electron microscopes at the British Thomson-Houston Company in Rugby, England, and the company filed a patent in December 1947 (patent GB685286). The technique as originally invented is still used in electron...