Method and apparatus for processing high time-bandwidth signals using a material with inhomogeneously broadened absorption spectrum
US7265712B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 12, 2003 |
| Grant date | Sep 4, 2007 |
| Priority date | — |
| Expiry date | Apr 4, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C13/04
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Techniques for analog processing of high time-bandwidth-product (TBP) signals use a material with an inhomogeneously broadened absorption spectrum including multiple homogeneously broadened absorption lines. A first set of signals on optical carriers interact in the material during a time on the order of a phase coherence time of the homogeneously broadened absorption lines to record an analog interaction absorption spectrum. Within a time on the order of a population recovery time for a population of optical absorbers it the material, the interaction absorption spectrum in the material is read to produce a digital readout signal. The readout signal represents a temporal map of the interaction absorption spectrum, and includes frequency components that relate to a processing result of processing the first set of signals. The techniques allow processing of RADAR signals for improved range resolution to a target, as well as speed of the target, among other uses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.