Ultra: A Unique Instrument for Time-Resolved Spectroscopy-Reference-Cited by-同舟云学术

Ultra: A Unique Instrument for Time-Resolved Spectroscopy

Published:2010-12 Issue:12 Volume:64 Page:1311-1319
ISSN:0003-7028
Container-title:Applied Spectroscopy
language:en
Short-container-title:Appl Spectrosc

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

Link

http://journals.sagepub.com/doi/pdf/10.1366/000370210793561673

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