Title :
Time domain separation of nuclear and electronic contributions to the third-order nonlinearity in glasses
Author :
Montant, S. ; Le Calvez, A. ; Freysz, E. ; Ducasse, A. ; Couzi, M.
Author_Institution :
Centre de Phys. Moleculaire Optique et Hertzienne, Bordeaux I Univ., Talence, France
Abstract :
Summary form only given.We report the observation of a nuclear nonresonant vibrational contribution in glasses with 100-fs pulses. In the glasses studied, the nuclear contribution to the third-order nonlinearity varies from 15 to 20%. The over-dampened nuclear time responses are in very good agreement with Raman spectra. These results were achieved by means of heterodyne time-resolved optical Kerr measurements using 100-fs cw mode-locked Ti:sapphire pulses.
Keywords :
Raman spectra; nonlinear optical susceptibility; optical Kerr effect; optical glass; refractive index; time resolved spectra; vibrational modes; 100 fs; depolarized Raman spectra; electronic contribution; heterodyne time-resolved optical Kerr measurement; localized vibrations; nonresonant vibrational contribution; nuclear contribution; optical glasses; over-dampened nuclear time responses; third-order nonlinearity; time domain separation; Delay; Glass; Nonlinear optics; Nuclear electronics; Optical mixing; Optical pumping; Optical refraction; Optical scattering; Oscillators; Time factors;
Conference_Titel :
Quantum Electronics Conference, 1998. IQEC 98. Technical Digest. Summaries of papers presented at the International
Conference_Location :
San Francisco, CA, USA
Print_ISBN :
1-55752-541-2
DOI :
10.1109/IQEC.1998.680129
