公开(公告)号：EP3058351A1

公开(公告)日：2016-08-24

申请号：EP14787377.2

申请日：2014-10-15

Applicant: TSI, Incorporated

Inventor： QUANT, Frederick ,  FARMER, Kenneth R. ,  TAN, Phillip V. ,  STIPE, Christopher B. ,  BUCKLEY, Steven G. ,  STOCKINGER, Erik ,  JENSEN, Daniel

IPC: G01N21/71

CPC classification number: G01N21/718 ,  G01J3/0221 ,  G01J3/0272 ,  G01J3/0291 ,  G01J3/18 ,  G01J3/443 ,  G01J2003/1861 ,  G01N2201/0221 ,  G01N2201/0697

Abstract: A novel device, method and systems disclosed managing the thermal challenges of LIBS laser components and a spectrometer in a handheld structure as well the use of simplified light signal collection which includes a bare fiber optic to collect the emitted light in close proximity to (or in contact with) the test material. In one example embodiment of the handheld LIBS device, a burst pulse frequency is 4 kHz is used resulting in a time between pulses of about 250µs which is a factor of 10 above that of other devices in the prior art. In a related embodiment, an active Q-switched laser module is used along with a compact spectrometer module using a transmission grating to improve LIBS measurement while substantially reducing the size of the handheld analyzer.