Spatiotemporally resolved far-field pulse contrast measuring method and device
US9574946B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 2, 2014 |
| Grant date | Feb 21, 2017 |
| Priority date | — |
| Expiry date | Jun 24, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T5/70
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A spatiotemporally resolved far-field pulse contrast measuring device includes a plano-convex cylindrical lens, a nonlinear correlation crystal, a plano-convex imaging lens and a signal-receiving system. The signal-receiving system includes a fiber array, a photomultiplier and a digital oscilloscope. A measuring method of the device includes steps of: focusing an under-test beam in x dimension to make a focus of the under-test beam fall onto a front surface of the nonlinear correlation crystal; making a spatial correlation and a temporal correlation respectively in two transverse spatial dimensions (x-y) of the nonlinear correlation crystal by the far-field under-test beam and a sampling beam; generating a two-dimensional correlating signal by the spatiotemporal correlation; imaging the two-dimensional correlating signal by an imaging system onto a detection surface of a receiver system; and measuring the x-dimensional and y-dimensional intensity distributions of the correlating signal highly dynamically by the receiver system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.