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

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

2001-06-27

arxiv.org/abs/physics/0106089v1

Rev. Sci. Instrum. 73, 1 (2002)

Physics

Instrumentation and Detectors

11 pages with 9 figures included

Scientific paper

10.1063/1.1416111

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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