Cascading amplified spontaneous emission of NO Rydberg states
Cascading amplified spontaneous emission of NO Rydberg states
复制标题
NO 里德堡态的级联放大自发发射
DOI：
10.1063/1.470846
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发表时间：
1996
影响因子：
4.4
通讯作者：
K. Tsukiyama
中科院分区：
文献类型：
--
作者：
J. Ishii;K. Uehara;K. Tsukiyama
通过光学-光学双共振激发，观察到了一氧化氮的(3dσ，π)H 2Σ+，H‘ 2Π(v=1)，(4pσ)M 2Σ+(v=0)，(4pπ)K 2Π(v=1)，(4dσ，π)O 2Σ+，O’ 2Π(v=0)，4f(v=1)和(5sσ) 2Σ+(v=0)单转动能级的放大自发辐射。紫外光激光固定在NO的A 2Σ+(v‘=0和1)←X 2Π3/2(v“=0)跃迁的特定转动分量上。当共线引入第二可见激光，并且频率与A 2Σ+态到高里德堡态的跃迁共振时，发现在近红外区沿激发激光产生了高方向性的ASE。ASE激发光谱表现出良好的信噪比，证明了激光诱导ASE作为一种新的分子激发态光谱技术的有效性。色散的ASE谱揭示了从初始填充能级到A 2Σ+态的级联辐射衰变。旋转..。
Amplified spontaneous emission (ASE) from single rotational levels of the Rydberg states (3dσ,π)H 2Σ+, H′ 2Π(v=1), (4pσ)M 2Σ+(v=0), (4pπ)K 2Π(v=1), (4dσ,π)O 2Σ+, O′ 2Π(v=0), 4f(v=1), and (5sσ)S 2Σ+(v=0) of nitric oxide, populated through optical–optical double resonance excitation has been observed. The ultraviolet laser is fixed to a specific rotational component of the A 2Σ+(v′=0 and 1)←X 2Π3/2(v″=0) transitions of NO. When the second visible laser was introduced collinearly and the frequency was resonant to the transitions from the A 2Σ+ state to the higher Rydberg states, the highly directional ASE in the near infrared region was found to be generated along the excitation laser beams. ASE excitation spectra exhibit an excellent signal‐to‐noise ratio, demonstrating the usefulness of the laser‐induced ASE as a novel spectroscopic technique for excited states of molecules. Dispersed ASE spectra revealed the cascading radiative decay from the initially populated levels down to the A 2Σ+ state. The rotatio...