Investigation of Rydberg states of nitrogen dioxide with high-power laser

GuiYin Zhang; Lianshui Zhang; Xiaofeng Han; Bo Sun

doi:10.1117/12.572699

26 January 2005 Investigation of Rydberg states of nitrogen dioxide with high-power laser

GuiYin Zhang, Lianshui Zhang, Xiaofeng Han, Bo Sun

Proceedings Volume 5627, High-Power Lasers and Applications III; (2005) https://doi.org/10.1117/12.572699
Event: Photonics Asia, 2004, Beijing, China

Abstract

A survey of the Rydberg states of NO₂ accessed in optical-optical two-color double-resonant (OODR) manner by the technique of multi-photon ionization (MPI) spectroscopy is presented. The pump laser is the double-frequency output of a Nd:YAG laser. While the probe laser is an optical parameter generator and optical parameter amplifier (OPG/OPA) pumped by the triple-frequency output 355nm of the former. The OODR-MPI spectrum of NO₂ is obtained by scanning the probe laser in the range of 465-535nm under the condition that the pump laser is unfocused and the probe laser is focused on the center of the pump laser beam. The ionization peaks could be attributed to E²∑_u←A²B₂←X²A₁(1+2) resonant transitions. This means that NO₂ molecule is excited to the appropriate level of the first excited A²B₂ state by absorbing one pump laser (ω₁) photon. Then from the first excited state it should take three probe photons (ω₂) and via final resonant E²∑_u state for the ionization. The bending vibration frequency of NO₂ E²∑_u state obtained from above ionization spectrum is (608.6±2.2)cm^-1. It is consistent with the literature.

Citation Download Citation

GuiYin Zhang, Lianshui Zhang, Xiaofeng Han, and Bo Sun "Investigation of Rydberg states of nitrogen dioxide with high-power laser", Proc. SPIE 5627, High-Power Lasers and Applications III, (26 January 2005); https://doi.org/10.1117/12.572699

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