LIBS (Laser-induced Breakdown Spectroscopy) testing system based on remote zooming light path multiplexing

The utility model discloses an LIBS (Laser-induced Breakdown Spectroscopy) testing system based on remote zooming light path multiplexing. The LIBS testing system mainly adopts a remote zooming light path multiplexing LIBS telescope which comprises a beam expander, a beam splitter positioned with a 45-DEG angle, an adjusting mirror group, a secondary beam expanding and focusing mirror group, an adjustable optical fiber coupling mirror and an optical fiber interface. A method provided by the utility model is capable of realizing light path multiplexing of LIBS excitation and LIBS spectrum signal acquisition, and realizing high-efficiency transmission of 1064nm pulse lasers and high-efficiency acquisition of an LIBS spectrum signal in a range of 200nm-750nm due to the design of a coating film, thereby increasing the signal to noise ratio of a remote LIBS.