The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 22, 2024
Filed:
Sep. 29, 2022
Yunnan Huapu Quantum Material Co., Ltd, Yunnan, CN;
Chongqing Institute of East China Normal University, Chongqing, CN;
East China Normal University, Shanghai, CN;
Roi Optoelectronics Technology Co, Ltd., Shanghai, CN;
Chongqing Huapu Scientific Instrument Co., Ltd., Chongqing, CN;
Chongqing Huapu Intelligent Equipment Co., Ltd., Chongqing, CN;
Guangdong Roi Optoelectronics Technology Co., Ltd., Guangdong, CN;
Heping Zeng, Chongqing, CN;
Mengyun Hu, Chongqing, CN;
Yunnan Huapu Quantum Material Co., Ltd, Kunming, CN;
Chongqing Institute of East China Normal University, Chongqing, CN;
East China Normal University, Shanghai, CN;
ROI Optoelectronics Technology CO, LTD., Shanghai, CN;
Chongqing Huapu Scientific Instrument Co., Ltd., Chongqing, CN;
Chongqing Huapu Intelligent Equipment Co., Ltd., Chongqing, CN;
GuangDong ROI Optoelectronics Technology Co., Ltd., Dongguan, CN;
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.