Data storage using light of spatially modulated phase and polarization
US10236027B1 · kind B1 · utility
9Cited by
21References
17Claims
0Family size
Assignee
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Key dates
| Filing date | Feb 12, 2018 |
| Grant date | Mar 19, 2019 |
| Priority date | — |
| Expiry date | Feb 12, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03H2225/60
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical data-storage system comprises a laser, an imaging optic, and associated computer logic. The laser is configured to emit a pulsed wavefront having uniform phase and polarization. The imaging optic is configured to modulate the phase and polarization of different portions of the wavefront by different amounts, and to diffract light from the different portions to a substrate with writeable optical properties. The logic is configured to receive data and to control modulation of the phase and polarization such that the light diffracted from the imaging optic writes the data to the substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.