ROT-OS12 # Measurement Station(Type C) of Multi-Channel Laser-Induced Breakdown Spectroscopy (LIBS)
Introduction
As an atomic emission spectroscopy technology, laser LIBS technology has received more and more attention in various application fields due to its many advantages such as fast detection speed, no need for sample preprocessing, and the ability to detect in situ in real time. LIBS technology refers to a method that uses focused high-energy pulse laser to be incident on the sample surface to form a plasma, and then measure the plasma emission spectral lines to determine the elemental composition of the sample. This experiment introduces the basic principles of LIBS technology, including the generation of laser-induced plasma and the formation process of emission spectral lines, as well as the LIBS spectrum detection device supporting the experiment. This experiment adopts an instrumented chassis design, uses a microchip solid-state laser as the light source, and has a built-in multi-channel fiber spectrometer for collection. Students can use the detection device to measure the LIBS spectra of various alloy samples (copper, aluminum, magnesium), and use LIBS spectral line analysis software to analyze the elemental composition of the samples. Through this process, students can deepen their understanding of LIBS technology.
Training Content
Learn and master the basic principles of LIBS;
Construction of multi-channel fiber spectrometer acquisition system;
Parameter adjustment of pulsed solid laser;
Measure alloy sample LIBS;
LIBS database establishment and component identification.
Configuration List
| Fiber optic spectrometer, 9 sets; | Light meter, 2 sets; | Raman test samples, 1 set; |
| Fiber optic tungsten halogen light source, 5 sets; | Test sample preparation system, 2 sets; | LIBS multi-channel spectrometer, 1 set; |
| Radial integrating sphere, 5 sets; | Test sample components and chemical experiment equipment, 1 set; | Pulse solid laser, 1 set; |
| Photometric integrating sphere, 1 set; | Multiple spectrum test platforms, 1 set; | Laser focusing system, 1 set; |
| Reflective integrating sphere, 1 set; | Open spectrometer host, 1 set; | Electronic control turntable and controller, 1 set; |
| Fiber collimator and optical fiber, 5 sets each; | Narrow linewidth semiconductor laser, 1 set; | LIBS spectrum test sample compartment, 1 set; |
| Reflective optical fiber, 2 pieces; | Microchip laser, 1 set; | LIBS spectral line analysis software, 1 set; |
| Radiation calibration device, 1 set; | 1 set of practical training supporting soft handouts; | LIBS test sample 1 set; |
| Gas discharge tubes, 1 set of 6 in total; | High-precision fiber optic spectrometer, 1 set; | Thin film thickness measurement software, absorbance measurement software, coating simulation and design software, 1 set each; |
| High-brightness white light/three-color LED light source, 1 set, 2 units in total; | Raman narrow linewidth laser, 1 set; | Comprehensive spectral measurement software, 8 sets; |
| High-brightness purple/blue/green LED light sources, 1 set with 3 units in total; | Raman probe system, 1 set; | Open spectrometer optical components, including low logarithmic reflection grating and high logarithmic scribed diffraction; |
| LED driving power supply, 3 sets; | Raman sample cell, 1 set; | Grating, high-resolution precision slit, high-sensitivity precision slit, TOSHIBA; |
| Tungsten halogen lamp driving power supply, 1 unit; | Raman measurement software, 1 set; | TCD1304 linear array CCD, 1 group. |
References: "Laser Spectroscopy" Science Press Editor-in-Chief: Damtred "Engineering Optics" Machinery Industry Press Editor-in-Chief: Yu Daoyin Tan Hengying
"Optical Radiation Measurement" Machinery Industry Press Editor-in-Chief: Ye Guanrong Wu Jizong "Photometric Measurement Technology" China Metrology Press Editor-in-Chief: Liu Hui Yang Chenzhu
"Color Science and Practical Technology of Computer Color Measurement and Matching" Chemical Industry Press Editor-in-Chief: Xue Chaohua
National standards: "GBT 26179-2010 Spectral radiance measurement of light sources" "JJG 384-2002 Spectral radiance illuminance standard lamp calibration procedures" "GBT 15489.1-1995 Filter glass test method spectral characteristics"