Abstract

Spectral hole burning is observed for the OH stretching mode of HDO dissolved in ${\mathrm{D}}_{2}$O at 298 K after intense infrared excitation. Three spectral components are inferred from the transient band shapes and related to an icelike molecular environment and other hydrogen-bonding configurations. A population lifetime of ${\mathit{T}}_{1}$=8\ifmmode\pm\else\textpm\fi{}2 ps and an anharmonic frequency shift of 270\ifmmode\pm\else\textpm\fi{}20 ${\mathrm{cm}}^{\mathrm{\ensuremath{-}}1}$ are measured.

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