Detection method and device based on laser-induced breakdown spectroscopy enhanced by 2D plasma grating
US12123836B2 · kind B2 · utility
Assignees
- YUNNAN HUAPU QUANTUM MATERIAL CO., LTD
- CHONGQING INSTITUTE OF EAST CHINA NORMAL UNIVERSITY
- EAST CHINA NORMAL UNIVERSITY
- ROI OPTOELECTRONICS TECHNOLOGY CO, LTD.
- CHONGQING HUAPU SCIENTIFIC INSTRUMENT CO., LTD.
- Chongqing Huapu Intelligent Equipment Co., Ltd.
- GUANGDONG ROI OPTOELECTRONICS TECHNOLOGY CO., LTD.
Inventors
Key dates
| Filing date | Sep 29, 2022 |
| Grant date | Oct 22, 2024 |
| Priority date | — |
| Expiry date | Jun 21, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/6402
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A detection method based on laser-induced breakdown spectroscopy enhanced by a two-dimensional plasma grating includes: generating a femtosecond laser pulse by a femtosecond laser, and splitting the femtosecond laser pulse into three sub-pulses by a beam splitting unit; focusing the three sub-pulses separately by a focusing unit to allow focused sub-pulses to be overlapped at an intersection in space, wherein before reaching the intersection, the three sub-pulses form two planes; synchronizing the three sub-pulses in a time domain by adjusting optical paths of the three sub-pulses in such a way that they have the same optical length and the three sub-pulses arrive at the intersection in space simultaneously and form the two-dimensional plasma grating; and exciting a sample on a stage based on the two-dimensional plasma grating to generate a plasma cluster, and acquiring a spectrum of the sample.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.