Abstract
A tunable, ultrafast laser system generating mid-IR and UV∕visible radiation is described and its output characterized. The system is designed to explore vibrational dynamics in the condensed phase in a direct, two-pulse, time-resolved manner, using Raman spectroscopy as the probe. To produce vibrational resolution, probe pulses are spectrally narrowed by use of a long doubling crystal. Frequency-resolved optical gating is used to evaluate beam characteristics. An effective method for determining the temporal overlap of the pump and probe pulses for a one-color, configuration is illustrated. Representative results from studies of heme and para-nitroaniline vibrational dynamics illustrate the effectiveness of the visible pump–visible probe portion of the system in illuminating fast structure and energy dynamics.
© 2006 Optical Society of America
Full Article | PDF ArticleMore Like This
John C. Deàk, Lawrence K. Iwaki, and Dana D. Dlott
Opt. Lett. 22(23) 1796-1798 (1997)
N. J. Tro, D. A. Arthur, and S. M. George
J. Opt. Soc. Am. B 6(5) 995-1002 (1989)
Dana D. Dlott and Michael D. Fayer
J. Opt. Soc. Am. B 6(5) 977-994 (1989)