公开(公告)号：US10983062B2

公开(公告)日：2021-04-20

申请号：US15757157

申请日：2016-09-02

Applicant: ELEMISSION INC.

Inventor： Lütfü Çelebi Özcan ,  François Doucet

IPC: G01N21/71 ,  G01N1/34 ,  G01N21/85 ,  G01N21/88 ,  B07C5/342 ,  G01N21/84 ,  G01J3/02

Abstract: A system for optically scanning a region comprising a sample of which a chemical composition is to be determined, comprising: a pulsed laser source for emitting a pulsed laser beam; a focusing device for adjusting the position of the waist of the laser beam along an optical path of the laser beam; a deflector for adjusting a propagation direction of the laser beam to a given direction; a controller for varying, via the beam deflector, the propagation direction of the pulsed laser beam according to a predefined beam path and varying, via the focusing device, the given position of the waist of the laser beam along the optical path; and a photodetector for detecting light emitted by a plasma created when a given one of laser pulses has an irradiance is greater than a breakdown threshold, the detected light being indicative of the chemical composition of the sample.

公开(公告)号：US20180275068A1

公开(公告)日：2018-09-27

申请号：US15757157

申请日：2016-09-02

Applicant: ELEMISSION INC.

Inventor： Lütfü Çelebi Özcan ,  François Doucet

IPC: G01N21/71 ,  G01N1/34 ,  G01N21/88 ,  G01N21/85

CPC classification number: G01N21/718 ,  B07C5/342 ,  G01J3/0289 ,  G01N1/34 ,  G01N21/85 ,  G01N21/8806 ,  G01N2021/845 ,  G01N2201/0633 ,  G01N2201/0636

Abstract: A system for optically scanning a region comprising a sample of which a chemical composition is to be determined, comprising: a pulsed laser source for emitting a pulsed laser beam; a focusing device for adjusting the position of the waist of the laser beam along an optical path of the laser beam; a deflector for adjusting a propagation direction of the laser beam to a given direction; a controller for varying, via the beam deflector, the propagation direction of the pulsed laser beam according to a predefined beam path and varying, via the focusing device, the given position of the waist of the laser beam along the optical path; and a photodetector for detecting light emitted by a plasma created when a given one of laser pulses has an irradiance is greater than a breakdown threshold, the detected light being indicative of the chemical composition of the sample.