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Sub-nanosecond, time-resolved, broadband infrared spectroscopy using synchrotron radiation

R. P. S. M. Lobo·J. D. LaVeigne·D. H. Reitze·D. B. Tanner·G. L. Carr
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Abstract

A facility for sub-nanosecond time-resolved (pump-probe) infrared spectroscopy has been developed at the National Synchrotron Light Source of Brookhaven National Laboratory. A mode-locked Ti:sapphire laser produces 2 ps duration, tunable near-IR pump pulses synchronized to probe pulses from a synchrotron storage ring. The facility is unique on account of the broadband infrared from the synchrotron, which allows the entire spectral range from 2 cm-1 (0.25 meV) to 20,000 cm-1 (2.5 eV) to be probed. A temporal resolution of 200 ps, limited by the infrared synchrotron-pulse duration, is achieved. A maximum time delay of 170 ns is available without gating the infrared detector. To illustrate the performance of the facility, a measurement of electron-hole recombination dynamics for an HgCdTe semiconductor film in the far- and mid infrared range is presented.

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R. P. S. M. Lobo, J. D. LaVeigne, D. H. Reitze, D. B. Tanner, G. L. Carr. 2001-06-27. Sub-nanosecond, time-resolved, broadband infrared spectroscopy using synchrotron radiation. https://doi.org/10.1063/1.1416111

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