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Proceedings Paper

Time-Resolved FTIR Spectroscopy Using a Step-Scan Interferometer
Author(s): A. Becker; Ch. Taran; W. Uhmann; F. Siebert
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Paper Abstract

In contrast to resonance Raman spectroscopy, there are only few reports on time resolved infrared spectroscopy (1-7). There are two main reasons: 1. infrared detectors have, as compared to UV-vis detectors, a low detectivity; 2. efficient broad-band infrared sources have usually low power. Earlier, we have developed an apparatus for infrared flash-photolysis experiments using a commercial infrared spectrophotometer as tunable monochromatic source and a photocon-ductive HgCdTe-detector. With this equipment, we were able to obtain time-resolved infrared difference spectra of CO-myoglobin (1,9), rhodopsin (10,11) and bacteriorhodopsin (11). The time-resolution could be increased up to 0.5 μs (12). But the mentioned disadvantages caused total measuring times of one day or longer. The low power of infrared sources can how be overcome by the use of quasi-continuously tunable laser sources such as CO-lasers (3) and lead-salt diode lasers (8).

Paper Details

Date Published: 1 December 1989
PDF: 2 pages
Proc. SPIE 1145, 7th Intl Conf on Fourier Transform Spectroscopy, (1 December 1989); doi: 10.1117/12.969571
Show Author Affiliations
A. Becker, Albert-Ludwig-Universitat (Germany)
Ch. Taran, Albert-Ludwig-Universitat (Germany)
W. Uhmann, Albert-Ludwig-Universitat (Germany)
F. Siebert, Albert-Ludwig-Universitat (Germany)

Published in SPIE Proceedings Vol. 1145:
7th Intl Conf on Fourier Transform Spectroscopy
David G. Cameron, Editor(s)

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