公开(公告)号：US20170167982A1

公开(公告)日：2017-06-15

申请号：US15039479

申请日：2014-11-26

Applicant: NATIONAL REASEARCH COUNCIL OF CANADA

Inventor： Francois DOUCET ,  Mohamad SABSABI ,  Lutfu-Celebi OZCAN ,  Jean-Francois GRAVEL ,  Francis BOISMENU

IPC: G01N21/71 ,  G01J3/443

CPC classification number: G01N21/718 ,  G01J3/443

Abstract: The invention discloses an apparatus and method for use with Laser Induced Breakdown Spectroscopy (LIBS) systems that can be applied to the real time analysis of various materials. The invention, in one aspect, provides a layer-by-layer method to remove the undesired coating layer of a material in which a pulsed laser is coupled with high speed scanning optics. To prepare the surface for LIBS, (i) a pulsed laser beam is scanned over an area of the surface to ablate the surface coating layer; (ii) the laser parameters are changed (i.e. pulse duration is made smaller) and the area scanned again to polish the surface; and (iii) the laser parameters are changed again (i.e. pulse duration is made smaller yet again) and the area scanned again with spectrometric analysis of the plasma plume created by the laser (i.e. LIBS is performed).