Femtosecond time-resolved investigation of the vibrational modes of vitreous GeO2

Julien Burgin (1) , C. Guillon (1) , P. Langot (1) , F. Vallée (2) , B. Hehlen (3)

1 CPMOH - Centre de physique moléculaire optique et hertzienne
2 LASIM - Laboratoire de Spectrométrie Ionique et Moléculaire
3 LCVN - Laboratoire des colloïdes, verres et nanomatériaux

The vibrational response of vitreous GeO2 is investigated using an impulsive stimulated Raman scattering technique in the femtosecond regime. The results yield evidence for a weak vibrational mode ascribed to oxygen motion in three-membered planar ring structures. Its frequency and damping are determined and compared to theoretical predictions.

Domaines: Autre [cond-mat.other]

Julien Burgin, C. Guillon, P. Langot, F. Vallée, B. Hehlen. Femtosecond time-resolved investigation of the vibrational modes of vitreous GeO2. Applied Physics Letters, 2006, 89, pp.251913. ⟨10.1063/1.2420775⟩. ⟨hal-00338961⟩