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Proceedings Paper

Resonance-enhanced multiphoton ionization spectrum of SO2 in the range of 420-540 nm
Author(s): Lianshui Zhang; Xiaofeng Han; Guiyin Zhang; Bo Sun
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Paper Abstract

The resonance enhanced multiphoton ionization (REMPI) spectrum of SO2 in the region of 420~540nm is obtained with a picosecond Nd:YAG laser pumped an Optical Parameter Generator and Optical Parameter Amplifier as radiation source. The ionization pathway is analyzed. SO2 molecule is ionized though (4+1) or (4+2) process and via 4p, 5p and 6p Rydberg resonant states. The near quintic variation of the ionization signal versus laser intensity verified this conclusion further. So the spectral lines can be assigned to np Rydberg series. The adiabatic ionization potential and the quantum defect of SO2 are obtained based on the experimental datum, which is 99586 cm-1 and 1.85 respectively.

Paper Details

Date Published: 26 January 2005
PDF: 7 pages
Proc. SPIE 5627, High-Power Lasers and Applications III, (26 January 2005); doi: 10.1117/12.569400
Show Author Affiliations
Lianshui Zhang, Hebei Univ. (China)
Xiaofeng Han, Hebei Univ. (China)
Guiyin Zhang, Hebei Univ. (China)
Bo Sun, Hebei Univ. (China)


Published in SPIE Proceedings Vol. 5627:
High-Power Lasers and Applications III
Dianyuan Fan; Ken-ichi Ueda; Jongmin Lee, Editor(s)

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