Time-resolved analysis of pure indium sample and LCD displays

We report spectroscopic study of the laser induced indium plasma produced in air by using a Q-switched pulsed Nd:YAG laser at 1064 nm. A streak camera coupled to a spectrograph is used to record optical plasma emission. Plasma parameters (excitation temperature and electron density) characterizing t...

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Bibliographic Details
Published in:Optical and quantum electronics 2018-06, Vol.50 (6), p.1-11, Article 236
Main Authors: Rabasovic, M. S., Marinkovic, B. P., Sevic, D.
Format: Article
Language:English
Subjects:
Characterization and Evaluation of Materials
Computer Communication Networks
Ecological monitoring
Electrical Engineering
Electron density
Electronic devices
Electronic waste
Emission analysis
Emission spectra
Focus on Optics and Bio-photonics
Indium
Laser induced breakdown
Laser plasmas
Lasers
Liquid crystal displays
Neodymium lasers
Optical Devices
Optics
Photonica 2017
Photonics
Physics
Physics and Astronomy
Plasma
Quality control
Recovering
Recycling
Semiconductor lasers
YAG lasers
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Summary:We report spectroscopic study of the laser induced indium plasma produced in air by using a Q-switched pulsed Nd:YAG laser at 1064 nm. A streak camera coupled to a spectrograph is used to record optical plasma emission. Plasma parameters (excitation temperature and electron density) characterizing the laser induced plasma are determined using the time-resolved analysis of the emission spectra. Indium plays an important role in electronic devices and LCD displays. However, indium is one of the rare elements. There are strong needs for recovery and recycling of rare materials from the used products and waste in the world. We present time-resolved laser induced breakdown spectra of atomic (In I) and ionic (In II) indium lines and other elements contained in the LCD displays, recorded using the fast streak camera, in different time ranges (from 500 ns to 20 μs). The study of indium lines showed in this paper could be useful for detecting indium and other elements in electronic waste for the purpose of recycling. Our LIBS measurements are applicable for any multielemental analysis in environmental physics, food quality control and ecology.
ISSN:0306-8919
1572-817X
DOI:10.1007/s11082-018-1506-0