Femtosecond spectroscopy of defect modes in silica glasses

C. Guillon (1) , Julien Burgin (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 D1 and D2 defect modes are investigated in the time domain in normal and densified silica using a high sensitivity femtosecond pump-probe technique with 15 fs pulses. Their frequency and width are precisely determined even when they are partly masked by a broad background in spontaneous Raman spectroscopy. These results open up many possibility for investigation of local structures in glasses.

Domaines: Autre [cond-mat.other]

C. Guillon, Julien Burgin, P. Langot, F. Vallée, B. Hehlen. Femtosecond spectroscopy of defect modes in silica glasses. Applied Physics Letters, 2005, 86, pp.081909. ⟨10.1063/1.1867566⟩. ⟨hal-00338965⟩