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Related Experiment Video

Updated: Dec 31, 2025

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A multi-spot laser induced breakdown spectroscopy system based on diffraction beam splitter.

Yu Zhu1, Ping-Wei Zhou1, Seng-Cheng Zhong1

  • 1Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang, Sichuan 621900, China.

The Review of Scientific Instruments
|January 3, 2020
PubMed
Summary
This summary is machine-generated.

A novel multispot Laser Induced Breakdown Spectroscopy (LIBS) system uses a Diffraction Beam Splitter for rapid, simultaneous analysis of multiple sample points. This innovation enables efficient material characterization in various scientific fields.

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Area of Science:

  • Analytical Chemistry
  • Spectroscopy
  • Materials Science

Background:

  • Laser Induced Breakdown Spectroscopy (LIBS) is a powerful atomic emission technique for elemental analysis.
  • Traditional LIBS systems typically analyze one spot per laser pulse, limiting throughput.
  • Simultaneous multi-point analysis is desirable for increased efficiency and comprehensive material characterization.

Purpose of the Study:

  • To develop and demonstrate a quick, simultaneous multispot LIBS system.
  • To integrate a Diffraction Beam Splitter (DBS) with a linear-to-linear fiber bundle for multi-point plasma generation and detection.
  • To validate the system's feasibility for rapid elemental analysis of various materials.

Main Methods:

  • A Diffraction Beam Splitter (DBS) divided a single laser beam into five sub-beams.
  • A lens focused these sub-beams to create an array of five plasma spots on the sample.
  • Plasma emissions were collected by a fiber bundle and analyzed using an intensified charge-coupled device (ICCD) detector.

Main Results:

  • The system successfully generated and analyzed five distinct plasma spots simultaneously with a single laser pulse.
  • Spectroscopy data from copper, layered materials, and a magnesium-molybdenum mixture confirmed the system's analytical capability.
  • The two-dimensional capability of the ICCD detector was utilized for both spectral and spatial analysis.

Conclusions:

  • The proposed multispot LIBS system offers a feasible and efficient method for simultaneous multi-point spectroscopy.
  • This technique enhances analytical speed and provides spatial information, applicable to fields like detonation and fluid physics.
  • The system demonstrates potential for advanced material analysis and research requiring rapid, localized elemental detection.