LIBS (Laser-induced Breakdown Spectroscopy) active and passive dual-mode spectrum detection method

A spectral detection, active and passive technology, applied in the field of photoelectric detection, can solve the problems of inability to achieve full multiplexing of optical channels and high system complexity, improve LIBS active spectral resolution and infrared passive spectral signal-to-noise ratio, and improve detection efficiency. , the effect of internal structure optimization

Active Publication Date: 2020-03-10
SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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Problems solved by technology

[0004] Since the LIBS spectrum is mainly located in the visible light band, and the passive spectral detection is mainly located in the infrared band, the conventional combined active and passive spectral detection often cannot realize the full multiplex

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  • LIBS (Laser-induced Breakdown Spectroscopy) active and passive dual-mode spectrum detection method
  • LIBS (Laser-induced Breakdown Spectroscopy) active and passive dual-mode spectrum detection method

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[0029] The specific embodiments of the present invention are as figure 1 and figure 2 Shown.

[0030] The planetary LIBS active and passive dual-mode matter detection method proposed in the present invention is implemented on the LIBS active and passive dual-mode matter detection system. The system is mainly composed of the main controller 1, the dual-mode spectrometer 7, the wide-spectrum optical fiber 3, the interface 4, and the narrow Slit 5, LIBS pulse laser 35, total mirror 36, ultraviolet detector 37, Schmidt mirror 41, distance measuring laser 42, one-dimensional motorized stage 43, secondary mirror 44, motorized controller 45, main dichroic mirror 46, main Mirror 47, central lens 49, rear dichroic mirror 50;

[0031] The detection optical path is a cassette telescope structure, which is mainly composed of a primary mirror 47, a secondary mirror 44, and a Schmidt mirror 41. The Schmidt mirror 41 is used to eliminate aberrations; the secondary mirror 44 is installed on a on...

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Abstract

The invention discloses an LIBS (Laser-induced Breakdown Spectroscopy) active and passive dual-mode spectrum detection method. The method comprises four steps such as self-focusing implementation, LIBS active spectrum detection, infrared passive spectrum detection and active and passive spectrum analysis. The method has the beneficial effects that the optimization of the internal structure of a spectrometer is realized by adopting ingenious electromechanical switching and grating area light splitting, and the compactness and convenience of the system are improved; the composite detection of the LIBS active spectrum and the infrared passive spectrum is realized by the same spectrometer and the same optical fiber inlet, and the detection efficiency is improved; and different designs are adopted at a sensor end for different active and passive spectrum characteristics, so that targeted spectrum detection is realized, and the LIBS active spectrum resolution and the infrared passive spectrum signal-to-noise ratio are improved.

Description

technical field [0001] The invention relates to a dual-mode material detection method, in particular to a LIBS active and passive dual-mode spectrum detection method, which is suitable for the analysis of planetary material components and belongs to the field of photoelectric detection. Background technique [0002] In the field of deep space exploration, the analysis of planetary surface matter requires unmanned automatic photoelectric detection methods. Compared with other complex material composition detection methods, the photoelectric material composition analysis method based on laser spectroscopy does not require time-consuming reagent addition and pretreatment preparation, can improve the analysis speed, is suitable for real-time analysis, and can multi-element and multi-element Simultaneous analysis of molecules shows great advantages. [0003] In the detection technology of planetary material spectrum, one type belongs to the active spectrum detection technology, ...

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Application Information

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IPC IPC(8): G01N21/71G01N21/35
CPCG01N21/718G01N21/35
Inventor 万雄王泓鹏袁汝俊李晨红
Owner SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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