Demonstration of Holographic Read-Only-Memory Mastering, Replication, and Playback with a Compact Reader
| Autor: | Rod Harris, Kevin Curtis, Ernest Chuang, Keith Malang, Chris Bergman, Brad Sissom, Adrian V. S. Hill, Bernard W. Bell |
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| Rok vydání: | 2008 |
| Předmět: |
Read-only memory
Physics and Astronomy (miscellaneous) Computer science business.industry General Engineering Holography General Physics and Astronomy Replication (computing) First generation law.invention Numerical aperture Lens (optics) symbols.namesake Fourier transform Optics law symbols business Computer hardware Digital audio |
| Zdroj: | Japanese Journal of Applied Physics. 47:5909-5911 |
| ISSN: | 1347-4065 0021-4922 |
| DOI: | 10.1143/jjap.47.5909 |
| Popis: | Development prototype systems for holographic read-only-memory (ROM) are demonstrated, capable of high density recording at 406.7 nm wavelength with 0.71 numerical aperture optics. A phase-conjugate Fourier transform lens is developed for improved capacity and tolerances and incorporated into a fully functional compact reader about 1 cm in height. The capacity target for the first generation is 4 Gbytes in a 42×35 mm2 media card. Two-step mastering, replication, and playback are demonstrated for digital audio stored in 125 holograms. |
| Databáze: | OpenAIRE |
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