Ultra: A Unique Instrument for Time-Resolved Spectroscopy

Author:

Greetham Gregory M.1,Burgos Pierre1,Cao Qian1,Clark Ian P.1,Codd Peter S.1,Farrow Richard C.1,George Michael W.1,Kogimtzis Moschos1,Matousek Pavel1,Parker Anthony W.1,Pollard Mark R.1,Robinson David A.1,Xin Zhi-Jun1,Towrie Michael1

Affiliation:

1. Central Laser Facility, Research Complex at Harwell, Science and Technology Facilities Council, Rutherford Appleton Laboratory, Harwell Science and Innovation Campus, Didcot, Oxfordshire, OX11 0QX, UK (G.M.G., P.B., I.P.C., P.M., A.W.P., M.R.P., D.A.R., M.T.); School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, UK (Q.C., M.W.G.); and Technology Department, STFC, Daresbury Laboratory, DSIC, Warrington, Cheshire, WA4 4AD, UK (P.S.C., R.C.F., M.K., Z.J.X.)

Abstract

We report the development of a high-sensitivity time-resolved infrared and Raman spectrometer with exceptional experimental flexibility based on a 10-kHz synchronized dual-arm femtosecond and picosecond laser system. Ultrafast high-average-power titanium sapphire lasers and optical parametric amplifiers provide wavelength tuning from the ultraviolet (UV) to the mid-infrared region. Customized silicon, indium gallium arsenide, and mercury cadmium telluride linear array detectors are provided to monitor the probe laser intensity in the UV to mid-infrared wavelength range capable of measuring changes in sample absorbance of ΔOD ∼ 10−5 in 1 second. The system performance is demonstrated for the time-resolved infrared, two-dimensional (2D) infrared, and femtosecond stimulated Raman spectroscopy techniques with organometallic intermediates, organic excited states, and the dynamics of the tertiary structure of DNA.

Publisher

SAGE Publications

Subject

Spectroscopy,Instrumentation

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3