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Proceedings Paper

Dynamics and structural information of hydrogen-bonded systems investigated by picosecond infrared spectroscopy
Author(s): Alfred Laubereau; Heinrich Graener
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Paper Abstract

Using infrared double-resonance spectroscopy on the time-scale of picosecon$Is the ultrafast dynamics of hydrogen bonds In condensed matter is directly investigated for the first time. We have developed a two-colour pump-probe technique with independently tunable Intense pump ( iO W/cm2) and weak probing pulses /1/. Within the tuning range of 1.4 - 4 jim novel spectroscopic information Is obtained by the help of temporal (' 3 ps), spectral ( 5 cm1 ) and polarization resolution. New spectral features not accessible for conventional IR spectroscopy are observed, e.g. excited state absorption, induced hot bands and, most important, spectral holes. In this way photophysical (vibrational energy transfer) and IR-photochemical processes are Investigated. Structural information is derived from the separation of inhomogeneous and homogeneous broadening effects of the Infrared bands.

Paper Details

Date Published: 24 September 1993
PDF: 2 pages
Proc. SPIE 1711, High-Performance Optical Spectrometry, (24 September 1993); doi: 10.1117/12.155676
Show Author Affiliations
Alfred Laubereau, Univ. of Bayreuth (Germany)
Heinrich Graener, Univ. of Bayreuth (Germany)

Published in SPIE Proceedings Vol. 1711:
High-Performance Optical Spectrometry
Maksymilian Pluta; Aleksandra Kopystynska; Mariusz Szyjer, Editor(s)

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