Direct observation of up-conversion via femtosecond photoelectron imaging

被引：8

作者：

Liu, Yuzhu ^{[1
]}

Knopp, Gregor ^{[2
]}

Gerber, Thomas ^{[2
]}

机构：

[1] Nanjing Univ Informat Sci & Technol, Sch Phys & Optoelect Engn, Nanjing 210044, Jiangsu, Peoples R China

[2] Paul Scherrer Inst, CH-5232 Villigen, Switzerland

来源：

PHYSICAL REVIEW A | 2015年 / 92卷 / 04期

基金：

中国国家自然科学基金;

关键词：

ULTRAFAST INTERNAL-CONVERSION; DYNAMICS; FURAN;

D O I：

10.1103/PhysRevA.92.042501

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Ultrafast relaxation dynamics in 2-methylfuran has been investigated by time-resolved photoelectron imaging. An "up" internal conversion from a low-lying state into a higher-lying one has been observed experimentally. Temporal photoelectron kinetic-energy distributions and angular distributions of the photoelectrons are analyzed. In the up-conversion process, the vibrational energy in the initial state is converted to the electronic energy of the final state during the energy transfer. And the time scale for the up-conversion process is estimated by the observed onset delay for the corresponding photoelectron bands.

引用

页数：5

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