Laser induced amplified spontaneous emission between the ion-pair states of Cl2
Laser induced amplified spontaneous emission between the ion-pair states of Cl2
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DOI：
10.1016/j.jms.2021.111513
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发表时间：
2021-08-12
影响因子：
1.4
通讯作者：
Tsukiyama, Koichi
中科院分区：
文献类型：
--
作者：
Hoshino, Shoma;Yamamoto, Oji;Tsukiyama, Koichi
首次在Cl-2的F0（u）（+）（P-3（0））和E0（g）（+）（P-3（2））离子对态之间探测到激光诱导放大自发辐射（LIASE）.在激发到F0（u）（+）（P-3（0））单电子振动能级时，观察到属于E0（g）（+）（P-3（2））-B（3）Pi（0（u）（+））跃迁的强紫外发射.发现只有E0（g）（+）（P-3（2））态的振动能级与激光制备的F0（u）（+）（P-3（0））态的振动能级之间具有相对大的Franck-Condon重叠。相应的F0（u）（+）（P-3（0））-E0（g）（+）（P-3（2））LIASE谱在约5 μ m处的强度分布与由紫外荧光分析确定的E0（g）（+）（P-3（2））态的振动布居一致。
We report the first detection of laser-induced amplified spontaneous emission (LIASE) between the F 0(u)(+) (P-3(0)) and E 0(g)(+) (P-3(2)) ion-pair states of Cl-2. Strong UV emission belonging to the E 0(g)(+) (P-3(2)) -B (3)Pi(0(u)(+)) transition was observed upon excitation to single vibronic levels of the F 0(u)(+) (P-3(0)) state. Only the vibrational levels of the E 0(g)(+) (P-3(2)) state with a relatively large Franck-Condon overlap between the laser-prepared vibrational levels of the F 0(u)(+) (P-3(0)) state were found to be generated. The intensity distribution in the corresponding F 0(u)(+) (P-3(0)) - E 0(g)(+) (P-3(2)) LIASE spectrum at approximately 5 mu m is consistent with the vibrational populations in the E 0(g)(+) (P-3(2)) state determined by the analysis of the UV fluorescence.