Title :
Thermal regimes in optical glass modification by the ultra-short laser pulses
Author :
Konyukhov, Andrey ; Melnikov, Alexander ; Romanova, Elena ; Mouskeftaras, Alexandros ; Guizard, Stephane
Author_Institution :
Saratov State Univ., Saratov, Russia
Abstract :
Optical glass heating by the ultra-short laser pulses is studied in a simple analytical model and in direct numerical simulations. Modification of the glass optical properties within a bulk volume is assumed to occur upon a pulse irradiation provided that the volume has been heated above the glass transition temperature. In experiment, chalcogenide glass sample response upon a femtosecond laser pulse irradiation was studied by using the interferometric pump-probe method. Long time-scale variations of the refractive index were found to be in correlation with the results of numerical simulations.
Keywords :
chalcogenide glasses; glass transition; laser beam effects; numerical analysis; optical glass; refractive index; SiO2; bulk volume; chalcogenide glass; direct numerical simulations; femtosecond laser pulse irradiation; glass optical property modification; glass transition temperature; interferometric pump-probe method; long time-scale variations; optical glass heating; refractive index; simple analytical model; thermal regimes; ultrashort laser pulses; Glass; Heating; Nonlinear optics; Optical interferometry; Optical pulses; Optical pumping; Ultrafast optics; optical glasses; photo-induced phenomena; ultra-short laser pulses;
Conference_Titel :
Transparent Optical Networks (ICTON), 2012 14th International Conference on
Conference_Location :
Coventry
Print_ISBN :
978-1-4673-2228-7
Electronic_ISBN :
2161-2056
DOI :
10.1109/ICTON.2012.6253753
