Time-Resolved Optical Emission Spectroscopy Diagnosis of CO<sub>2</sub> Laser-Produced SnO<sub>2</sub> Plasma

LAN Hui (兰慧); WANG Xinbing (王新兵); ZUO Duluo (左都罗)

doi:10.1088/1009-0630/18/9/05

Plasma Science and Technology > 2016 > 18(9): 902-906. > DOI: 10.1088/1009-0630/18/9/05

LAN Hui (兰慧), WANG Xinbing (王新兵), ZUO Duluo (左都罗). Time-Resolved Optical Emission Spectroscopy Diagnosis of CO₂ Laser-Produced SnO₂ Plasma[J]. Plasma Science and Technology, 2016, 18(9): 902-906. DOI: 10.1088/1009-0630/18/9/05

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Time-Resolved Optical Emission Spectroscopy Diagnosis of CO₂ Laser-Produced SnO₂ Plasma

1 School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan 430074, China 2 Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, China 3 School of Physics and Information Engineering, Jianghan University, Wuhan 430056, China

Funds: supported by National Natural Science Foundation of China (No. 11304235) and the Director Fund of WNLO

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Received Date: September 13, 2015

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Abstract

Abstract

The spectral emission and plasma parameters of SnO₂ plasmas have been investigated. A planar ceramic SnO₂ target was irradiated by a CO₂ laser with a full width at half maximum of 80 ns. The temporal behavior of the specific emission lines from the SnO₂ plasma was characterized. The intensities of Sn I and Sn II lines first increased, and then decreased with the delay time. The results also showed a faster decay of Sn I atoms than that of Sn II ionic species. The temporal evolutions of the SnO₂ plasma parameters (electron temperature and density) were deduced. The measured temperature and density of SnO₂plasma are 4.38 eV to 0.5 eV and 11.38×10¹⁷ cm ⁻³ to 1.1×10¹⁷ cm⁻³, for delay times between 0.1 µs and 2.2 µs. We also investigated the effect of the laser pulse energy on SnO₂ plasma.
- optical emission spectroscopy,
- laser produced plasma,
- CO₂laser,
- electron temperature,
- electron density

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