Vibrational substructure in the OH stretching band of water

Zhaohui Wang, Andrei Pakoulev, Yoonsoo Pang, Dana D. Dlott

Research output: Contribution to journalArticlepeer-review


Spectral diffusion in the OH stretching (νOH) band of water is studied by ultrafast IR-Raman spectroscopy. The νOH transition consists of two overlapping inhomogeneously broadened subbands, a broader (∼500 cm-1) redshifted band and a smaller, narrower (∼200 cm-1) blueshifted band. The blueshifted band, which shows less spectral diffusion, has a longer lifetime (0.75 vs 0.55 ps) and a smaller vibrational frequency blueshift from the ground state (65 vs 90 cm -1), is tentatively assigned to water molecules where one hydrogen atom has a broken hydrogen bond.

Original languageEnglish (US)
Pages (from-to)281-288
Number of pages8
JournalChemical Physics Letters
Issue number3-4
StatePublished - Sep 5 2003

ASJC Scopus subject areas

  • General Physics and Astronomy
  • Physical and Theoretical Chemistry


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