IR absorption spectroscopy of water in CsLiB6O10 crystals

L. Kovács, K. Lengyel, A. Péter, K. Polgár, A. Beran

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

Polarized absorption spectra of CsLiB6O10 crystals have been measured between -186 and 25 °C in the 1500-7500 cm-1 wavenumber range. A series of absorption bands have been observed with intensities depending on the thermal history of the crystals. Three of them have been assigned as the fundamental H-O-H bending mode (δ = 1650 cm -1), and symmetric and asymmetric OH stretching modes of the bound H2O molecule (νs = 3413 cm-1 and ν a = 3581 cm-1, respectively). Additional features in the 3800-4400, 4700-5300 and 6500-7100 cm-1 ranges have been interpreted as overtones and combinations of the fundamental H2O vibrations. The above assignments have been verified by detecting the isotopic replica of the bands in a crystal treated in D2O vapour atmosphere. The possible sites for the H2O molecule in the lattice have been deduced from polarization angle dependence measurements.

Original languageEnglish
Pages (from-to)457-463
Number of pages7
JournalOptical Materials
Volume24
Issue number3
DOIs
Publication statusPublished - Dec 2003

Fingerprint

Absorption spectroscopy
Infrared spectroscopy
absorption spectroscopy
Crystals
Water
Absorption spectra
water
crystals
absorption spectra
Molecules
Angle measurement
replicas
Stretching
molecules
Vapors
histories
vapors
Polarization
harmonics
atmospheres

Keywords

  • Borates
  • FTIR spectroscopy
  • HO vibration

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials

Cite this

IR absorption spectroscopy of water in CsLiB6O10 crystals. / Kovács, L.; Lengyel, K.; Péter, A.; Polgár, K.; Beran, A.

In: Optical Materials, Vol. 24, No. 3, 12.2003, p. 457-463.

Research output: Contribution to journalArticle

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AU - Lengyel, K.

AU - Péter, A.

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AU - Beran, A.

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N2 - Polarized absorption spectra of CsLiB6O10 crystals have been measured between -186 and 25 °C in the 1500-7500 cm-1 wavenumber range. A series of absorption bands have been observed with intensities depending on the thermal history of the crystals. Three of them have been assigned as the fundamental H-O-H bending mode (δ = 1650 cm -1), and symmetric and asymmetric OH stretching modes of the bound H2O molecule (νs = 3413 cm-1 and ν a = 3581 cm-1, respectively). Additional features in the 3800-4400, 4700-5300 and 6500-7100 cm-1 ranges have been interpreted as overtones and combinations of the fundamental H2O vibrations. The above assignments have been verified by detecting the isotopic replica of the bands in a crystal treated in D2O vapour atmosphere. The possible sites for the H2O molecule in the lattice have been deduced from polarization angle dependence measurements.

AB - Polarized absorption spectra of CsLiB6O10 crystals have been measured between -186 and 25 °C in the 1500-7500 cm-1 wavenumber range. A series of absorption bands have been observed with intensities depending on the thermal history of the crystals. Three of them have been assigned as the fundamental H-O-H bending mode (δ = 1650 cm -1), and symmetric and asymmetric OH stretching modes of the bound H2O molecule (νs = 3413 cm-1 and ν a = 3581 cm-1, respectively). Additional features in the 3800-4400, 4700-5300 and 6500-7100 cm-1 ranges have been interpreted as overtones and combinations of the fundamental H2O vibrations. The above assignments have been verified by detecting the isotopic replica of the bands in a crystal treated in D2O vapour atmosphere. The possible sites for the H2O molecule in the lattice have been deduced from polarization angle dependence measurements.

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