Monitoring ultrafast vibrational dynamics of isotopic molecules with frequency modulation of high-order harmonics.
Monitoring ultrafast vibrational dynamics of isotopic molecules with frequency modulation of high-order harmonics.
复制标题
通过高次谐波频率调制监测同位素分子的超快振动动力学
DOI:
10.1038/s41467-018-03568-3
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发表时间:
2018-03-16
影响因子:
16.6
通讯作者:
Bandrauk AD
中科院分区:
文献类型:
--
作者:
He L;Zhang Q;Lan P;Cao W;Zhu X;Zhai C;Wang F;Shi W;Li M;Bian XB;Lu P;Bandrauk AD
Molecules constituted by different isotopes are different in vibrational modes, making it possible to elucidate the mechanism of a chemical reaction via the kinetic isotope effect. However, the real-time observation of the vibrational motion of isotopic nuclei in molecules is still challenging due to its ultrashort time scale. Here we demonstrate a method to monitor the nuclear vibration of isotopic molecules with the frequency modulation of high-order harmonic generation (HHG) during the laser-molecule interaction. In the proof-of-principle experiment, we report a red shift in HHG from H 2 and D 2. The red shift is ascribed to dominant HHG from the stretched isotopic molecules at the trailing edge of the laser pulse. By utilizing the observed frequency shift, the laser-driven nuclear vibrations of H 2 and D 2 are retrieved. These findings pave an accessible route toward monitoring the ultrafast nuclear dynamics and even tracing a chemical reaction in real time.
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影响因子:
8.6
作者:
Bian, Xue-Bin;Bandrauk, Andre D.
通讯作者:
Bandrauk, Andre D.
影响因子:
2.9
作者:
Gaarde, MB;Salin, F;L'Huillier, A
通讯作者:
L'Huillier, A
影响因子:
2.9
作者:
Bian, Xue-Bin
通讯作者:
Bian, Xue-Bin
影响因子:
3.8
作者:
Farrell, J. P.;McFarland, B. K.;Guehr, M.
通讯作者:
Guehr, M.
影响因子:
4.4
作者:
Feng, Liqiang;Chu, Tianshu
通讯作者:
Chu, Tianshu