Resonance-enhanced multiphoton ionization mechanism of NO in 495~575nm wavelength region

Guiyin Zhang; Yidong Jin

doi:10.1117/12.758215

4 January 2008 Resonance-enhanced multiphoton ionization mechanism of NO in 495~575nm wavelength region

Guiyin Zhang, Yidong Jin

Proceedings Volume 6839, Nonlinear Optics: Technologies and Applications; 68392C (2008) https://doi.org/10.1117/12.758215
Event: Photonics Asia 2007, 2007, Beijing, China

Abstract

Multiphoton ionization spectrum of NO in the wavelength region of 495.0~575.0 nm with a Nd:YAG laser pumped an Optical Parameter Generator and Amplifier as excitation source is presented. The spectral bands are assigned by measuring the variation of the ionization signal versus laser intensity together with calculation. The results show that NO molecules are ionized via C²Π(v'=2,3), D²Σ(v'=2,3) intermediate resonant states and by (3+1) process in 495.0~535.0 nm wavelength region. While the spectral bands come from the transition of NO molecule from the ground electronic state to C²Π(v'=0,1), D²Σ(v'=0,1) and N²Δ(v'=1,2) intermediate resonant ones in 535.0~575.0 nm wavelength region. In this region, NO molecule is ionized by (3+2) and (4+1) multiphoton process. The molecule constants about NO(C²Π, D²Σ and N²Δ) states are calculated from the center wavelength of the spectral bands. It is also found that owing to the special electron configuration of NO, this molecule doesn't follow the normal transition selection rule of the diatomic molecule during the multi-photon process.

Citation Download Citation

Guiyin Zhang and Yidong Jin "Resonance-enhanced multiphoton ionization mechanism of NO in 495~575nm wavelength region", Proc. SPIE 6839, Nonlinear Optics: Technologies and Applications, 68392C (4 January 2008); https://doi.org/10.1117/12.758215

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