Method and system for measuring transient time width of ultrashort pulse
US11143558B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jun 8, 2020 |
| Grant date | Oct 12, 2021 |
| Priority date | — |
| Expiry date | Jun 8, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J11/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Provided are a method and a system for measuring a transient time width of an ultrashort pulse in real time. The method includes: performing an interaction of a laser pulse to be measured with a linear chirped pulse in a second-order non-linear medium, to generate a sum-frequency beam, wherein an intensity sag occurs in the chirped pulse after the interaction; performing a time spreading by a time stretching system on the chirped pulse with the intensity sag; detecting the spread chirped pulse with the spread intensity sag by a photoelectric detector, and measuring and recording a time width τ′ of the spread intensity sag by an oscilloscope; and obtaining the transient time width τ of the laser pulse to be measured according to a formula of τ=τ′/M, where M is an amplification coefficient of the time stretching system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.