Remote real-time reconstruction of holograms using the lumatron
| Autor: | R. J. Doyle, W. E. Glenn |
|---|---|
| Rok vydání: | 2010 |
| Předmět: |
Materials science
business.industry Materials Science (miscellaneous) Bandwidth (signal processing) Holography Iterative reconstruction Industrial and Manufacturing Engineering Ptychography law.invention Amplitude modulation Speckle pattern symbols.namesake Optics Fourier transform law symbols Cathode ray Business and International Management business |
| Zdroj: | Applied optics. 11(5) |
| ISSN: | 1559-128X |
| Popis: | A system capable of generating holograms at one place and simultaneously reconstructing them at another has been developed and demonstrated. A 1.2-cm(2) Fourier transform hologram is converted, by means of the photoconductor and scanning electron beam in a vidicon, into a video signal. Then via an 8.5-MHz bandwidth video channel this signal is fed to a Lumatron at another location. In the Lumatron a second electron beam synchronized to the one in the vidicon causes a diffracting structure, depth-modulated as per the amplitude modulation of the hologram signal, to be formed in a thin layer of reusable thermoplastic. A laser beam passing coaxially through the Lumatron and the thermoplastic during this process generates the reconstructed twin images of the original object. |
| Databáze: | OpenAIRE |
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