Resonance-enhanced multiphoton ionization spectrum of SO2 in the range of 420-540 nm

Lianshui Zhang; Xiaofeng Han; Guiyin Zhang; Bo Sun

doi:10.1117/12.569400

26 January 2005 Resonance-enhanced multiphoton ionization spectrum of SO₂ in the range of 420-540 nm

Lianshui Zhang, Xiaofeng Han, Guiyin Zhang, Bo Sun

Proceedings Volume 5627, High-Power Lasers and Applications III; (2005) https://doi.org/10.1117/12.569400
Event: Photonics Asia, 2004, Beijing, China

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.

Citation Download Citation

Lianshui Zhang, Xiaofeng Han, Guiyin Zhang, and Bo Sun "Resonance-enhanced multiphoton ionization spectrum of SO₂ in the range of 420-540 nm", Proc. SPIE 5627, High-Power Lasers and Applications III, (26 January 2005); https://doi.org/10.1117/12.569400

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