Picosecond infrared studies of H − local modes in LaF 3

Three-beam normalised pump–probe measurements for the Z-localised vibrational mode of H − in LaF 3 yield a 10 K population decay time ( T 1) of 49 ps. The temperature decrease of this T 1 time is fitted to two-phonon anharmonic decay together with one-phonon absorption to the 351 cm −1 higher (X, Y)...

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Bibliographic Details
Published inJournal of luminescence Vol. 94; pp. 729 - 732
Main Authors Wells, Jon-Paul R., Jones, Glynn D., Bradley, Ian V., Pidgeon, Carl R.
Format Journal Article
LanguageEnglish
Published Elsevier B.V 2001
Subjects
Free electron laser
Local modes
Pump–probe
Rare-earth trifluorides
Vibrational echoes
Rare-earth trifluorides
Free electron laser
Pump–probe
Local modes
Vibrational echoes
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Summary:Three-beam normalised pump–probe measurements for the Z-localised vibrational mode of H − in LaF 3 yield a 10 K population decay time ( T 1) of 49 ps. The temperature decrease of this T 1 time is fitted to two-phonon anharmonic decay together with one-phonon absorption to the 351 cm −1 higher (X, Y)-mode. Two-pulse vibrational echo measurements yield a homogeneous line width of 0.3 cm −1.
ISSN:0022-2313
1872-7883
DOI:10.1016/S0022-2313(01)00373-8