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

Abstract

The invention discloses an LIBS (Laser-induced Breakdown Spectroscopy) active and passive dual-mode spectrum detection system, which is mainly composed of a main controller, a dual-mode spectrometer,a wide-spectrum optical fiber, an interface, a slit, an LIBS pulse laser, a total reflection mirror, an ultraviolet detector, a Schmidt mirror, a distance measuring laser, a one-dimensional electric table, a secondary mirror, an electric controller, a main dichroic mirror, a primary mirror, a central lens and a rear dichroic mirror. The system 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 andthe infrared passive spectrum signal-to-noise ratio are improved.

Description

technical field [0001] The invention relates to a dual-mode material detection system, in particular to a LIBS active-passive dual-mode spectral detection system, 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, that...

AI Technical Summary

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 multiplexing of optical channels, resulting in high complexity of the system. The conventional combined system needs to prepare Two sets of spectrometers, because conventional spectrometers cannot complete the simultaneous detection of active and passive spectra

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