Laser induced breakdown spectrometer and spectral signal collection method of same

A technology of laser-induced breakdown and spectrometer, applied in the field of laser diagnosis and measurement, to achieve the effect of less mechanical parts, improved adjustment accuracy and simple structure

Active Publication Date: 2012-10-17
ELECTRIC POWER RES INST OF GUANGDONG POWER GRID +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] Based on this, the present invention aims to overcome the defect in the prior art that the optical path needs to be disassembled to adjust the optical path, and provides a laser-induced breakdown spectrometer. Another purpose of the present invention is to provide a laser-induced breakdown spectrum signal collection method, which can accurately adjust The collection angle of the plasma signal makes the measurement results more accurate

Method used

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  • Laser induced breakdown spectrometer and spectral signal collection method of same
  • Laser induced breakdown spectrometer and spectral signal collection method of same
  • Laser induced breakdown spectrometer and spectral signal collection method of same

Examples

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Embodiment 1

[0038] A laser-induced breakdown spectrometer, including a light-receiving lens barrel and a laser; also includes a rotating platform and a rotating pillar, the rotating platform is connected to the rotating pillar, and the rotating platform can rotate around the central axis where the rotating pillar is located, relative to the center axis, the position of the laser is fixed, the light-receiving lens barrel is fixed on the rotating platform, and both the laser and the light-receiving lens barrel are emitting pulsed laser light and collecting spectral signals at the same position on the central axis.

[0039] The rotating platform is rotatably connected with the rotating pillar. The structure is simple, the manufacturing cost is low, the rotating platform can be rotated by pushing the rotating platform, and the operability is strong.

[0040] When the spectrometer is working, the laser emits pulsed laser light to the sample at the central axis of the rotating platform to excit...

Embodiment 2

[0043] Such as figure 1 As shown, a laser-induced breakdown spectrometer includes a light-receiving lens tube 1 and a laser 2; it also includes a rotating platform 3 and a rotating support 4, and the rotating platform 3 is connected to the rotating support 4, and the rotating platform 3 can rotate around the The central axis where the pillar 4 is located rotates, relative to the central axis, the position of the laser 2 is fixed, the light-receiving lens barrel 1 is fixed on the rotating platform 3, and the laser 2 and the light-receiving lens barrel 1 are both on the central axis The same location emits pulsed laser light 15 and collects spectral signals.

[0044] The light-receiving lens barrel 1 integrates a focusing optical lens and a dedicated light-receiving probe for optical fibers. The optical lens and the light-receiving probe perform accurate optical focusing. Connect the optical fiber 13 to connect to the spectrum analyzer 12, and transmit the spectral signal throug...

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Abstract

The invention discloses a laser induced breakdown spectrometer and a spectral signal collection method of the same, belonging to the technical field of laser diagnostics and measurement. The spectrometer comprises a light receiving lens cone, a laser device, a rotating platform and a rotating support column, wherein the rotating platform is connected with the rotating support column and can rotate around the central axis of the rotating support column, relative to the central axis, the laser device is fixed, the light receiving lens cone is fixed on the rotating platform, and the laser device and the light receiving lens cone both face the same position on the central axis and respectively emit pulse laser and collect the spectral signal. With the method, the light receiving lens cone is fixed on the rotating platform and can rotate around a sample exciting point, and simultaneously, the light receiving lens cone always faces the sample exciting point and collects the spectral signals from different angles of an exciting plasma body. The spectrometer and the signal collection method provided by the invention can regulate the spectral signal collection angle just by rotating the rotating platform without detaching each component, so that the spectrometer and the method have the advantages of being simple, quick and steady. The spectrometer and the method are suitable for the accurate measurement of laser induced breakdown spectrum.

Description

[0001] technical field [0002] The invention relates to the technical field of laser diagnosis and measurement, and more specifically relates to a laser-induced breakdown spectrometer and a spectral analysis method capable of adjusting and optimizing an optical path and improving measurement accuracy. [0003] Background technique [0004] Laser-Induced Breakdown Spectroscopy (LIBS) technology uses pulsed laser as the excitation light source, which can realize multi-element synchronous and rapid detection of sample micro-damage without or with simple sample pretreatment. It has gradually developed into a potential on-line detection technology of industrial processes, and has been tried to be applied to quality control or status diagnosis of various industrial processes. [0005] In the current research on this technology, in terms of improving the measurement accuracy of LIBS, most researchers and users only focus on the improvement of the performance of lasers, spectrum a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/63G01J3/28
Inventor 潘凤萍陈世和张曦陆继东李俊彦姚顺春张博
Owner ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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