Light-induced vibrational structure in H2+ and D2+ in intense laser fields.
Light-induced vibrational structure in H2+ and D2+ in intense laser fields.
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DOI：
10.1103/physrevlett.70.1077
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发表时间：
1993-02
影响因子：
8.6
通讯作者：
Zavriyev;Bucksbaum;Squier;Saline
中科院分区：
文献类型：
--
作者：
Zavriyev;Bucksbaum;Squier;Saline
用160 fs的769 nm光脉冲重新研究了H[sub 2][sup +]和D[sub 2][sup +]在强激光场中的键软化和阈上解离。当强度大于[类似于]10[sup 13] W/cm[sup 2]时，解离光谱中出现新的特征。这与光致振动态中陷阱布居的形成是一致的，在1[ital s][sigma][sub [ital g]]和2[ital p][sigma][sub [ital u]]态之间的三光子共振附近的绝热势中形成。在多光子电离后探测到的离子碎片的动能谱中，出现了这种光致态的振转结构。
Molecular bond-softening and above-threshold dissociation of H[sub 2][sup +] and D[sub 2][sup +] in intense laser fields is reexamined using 160 fs pulses of 769 nm light. At intensities greater than [similar to]10[sup 13] W/cm[sup 2] new features appear in the dissociation spectrum. These are consistent with the formation of trapped population in light-induced vibrational states, formed in the adiabatic potential near the three-photon resonance between the 1[ital s][sigma][sub [ital g]] and 2[ital p][sigma][sub [ital u]] states. Rovibrational structure of such light-induced states appears in the kinetic energy spectra of the ion fragments detected after multiphoton ionization.