期刊
CHEMICAL SCIENCE
卷 13, 期 33, 页码 9586-9594出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d2sc02185d
关键词
-
资金
- Engineering and Physical Sciences Research Council (EPSRC) [EP/P001459/1, EP/R030448/1, EP/T020903/1]
- European Research Council under the European Union [679649, 899900]
- Heriot-Watt University
- European Research Council (ERC) [679649, 899900] Funding Source: European Research Council (ERC)
By exploiting the phenomenon of resonant dispersive wave emission, we have achieved time-resolved photoelectron imaging measurements with extremely short temporal resolution, advancing the current state of the art in ultrafast photoelectron spectroscopy. Our research findings can contribute to a better understanding of ultrafast photochemical reactions and provide a novel approach for future spectroscopic applications.
We exploit the phenomenon of resonant dispersive wave (RDW) emission in gas-filled hollow capillary fibres (HCFs) to realize time-resolved photoelectron imaging (TRPEI) measurements with an extremely short temporal resolution. By integrating the output end of an HCF directly into a vacuum chamber assembly we demonstrate two-colour deep ultraviolet (DUV)-infrared instrument response functions of just 10 and 11 fs at central pump wavelengths of 250 and 280 nm, respectively. This result represents an advance in the current state of the art for ultrafast photoelectron spectroscopy. We also present an initial TRPEI measurement investigating the excited-state photochemical dynamics operating in the N-methylpyrrolidine molecule. Given the substantial interest in generating extremely short and highly tuneable DUV pulses for many advanced spectroscopic applications, we anticipate our first demonstration will stimulate wider uptake of the novel RDW-based approach for studying ultrafast photochemistry - particularly given the relatively compact and straightforward nature of the HCF setup.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据