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Mid infrared-terahertz double resonance experiments at Jefferson Lab - a progress report

Mid infrared-terahertz double resonance experiments at Jefferson Lab - a progress report
Mid infrared-terahertz double resonance experiments at Jefferson Lab - a progress report
An attempt to observe THz/mid-infrared double resonance using the Jefferson Laboratories coherently enhanced synchrotron THz radiation (CSR) source and, initially, a broad-band thermal IR source is described. By using the inherent RF pulse structure of the CSR source with an RF phase sensitive detector, and an FTIR spectrophotometer with a fast mercury cadmium telluride detector, it is hoped to recover the double resonance signal in a frequency multiplexed manner. Full phase information will also be retrieved yielding discrimmination between 'prompt' and 'thermal' contributions. The initial targets will be gas phase, but ultimately we will address biomolecules looking for THz driven low frequency vibrations modulating, for example the mid-IR amide bands. It is hoped eventually to monochromate the THz source and use the JLab mid IR FEL for fully time and frequency resolved studies of the double resonance. The talk is very much an update on work in progress, as we attack a wide range of electronic and optical issues which need to be overcome
Rutt, H.N.
e09fa327-0c01-467a-9898-4e7f0cd715fc
Klopf, M.
40478a95-4fa1-4741-871e-540903b1e77a
Rutt, H.N.
e09fa327-0c01-467a-9898-4e7f0cd715fc
Klopf, M.
40478a95-4fa1-4741-871e-540903b1e77a

Rutt, H.N. and Klopf, M. (2007) Mid infrared-terahertz double resonance experiments at Jefferson Lab - a progress report. UK Synchrotron Radiation User Meeting, Oxford, United Kingdom. 12 - 13 Sep 2007.

Record type: Conference or Workshop Item (Paper)

Abstract

An attempt to observe THz/mid-infrared double resonance using the Jefferson Laboratories coherently enhanced synchrotron THz radiation (CSR) source and, initially, a broad-band thermal IR source is described. By using the inherent RF pulse structure of the CSR source with an RF phase sensitive detector, and an FTIR spectrophotometer with a fast mercury cadmium telluride detector, it is hoped to recover the double resonance signal in a frequency multiplexed manner. Full phase information will also be retrieved yielding discrimmination between 'prompt' and 'thermal' contributions. The initial targets will be gas phase, but ultimately we will address biomolecules looking for THz driven low frequency vibrations modulating, for example the mid-IR amide bands. It is hoped eventually to monochromate the THz source and use the JLab mid IR FEL for fully time and frequency resolved studies of the double resonance. The talk is very much an update on work in progress, as we attack a wide range of electronic and optical issues which need to be overcome

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Published date: 2007
Venue - Dates: UK Synchrotron Radiation User Meeting, Oxford, United Kingdom, 2007-09-12 - 2007-09-13

Identifiers

Local EPrints ID: 167059
URI: http://eprints.soton.ac.uk/id/eprint/167059
PURE UUID: 8bf1bb7f-9644-4bb5-9f8e-3d565b976b82

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Date deposited: 05 Nov 2010 11:46
Last modified: 17 Sep 2020 16:40

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