Third-order non-linear optical response in chalcogenide glasses: Measurement and evaluation

Author

Romanova, E. ; Chumakov, Konstantin ; Mouskeftaras, Alexandros ; Guizard, Stephane ; Abdel-Moneim, Nabil ; Furniss, D. ; Seddon, A.B. ; Benson, T.M.

Author_Institution

Saratov State Univ., Saratov, Russia

fYear

2013

fDate

23-27 June 2013

Firstpage

1

Lastpage

4

Abstract

In this paper, the temporal dynamics of the non-linear response of chalcogenide glass samples of the system As-S-Se have been studied near the bandgap frequencies of the samples by using the interferometric pump-probe method. The pumping laser frequency was located in the spectral range of the Urbach tail or weak-absorption tail at the edge of the fundamental absorption band (so-called Tauc edge), depending on the glass composition. Peculiarities of the non-linear response of each glass composition depend on the relation of cross-sections of the two- and single- photon absorption at the 790 nm wavelength of the pumping laser.

Keywords

chalcogenide glasses; nonlinear optics; optical pumping; two-photon processes; As-S-Se; Urbach tail; chalcogenide glasses; interferometric pump-probe; non-linear response; pumping laser; single-photon absorption; third-order non-linear optical response; two-photon absorption; wavelength 790 nm; weak-absorption tail; Absorption; Charge carrier processes; Delay effects; Glass; Nonlinear optics; Optical pumping; Photonic band gap; chalcogenide glass; plasma dynamics; pump-probe method; third-order non-linearity;

fLanguage

English

Publisher

ieee

Conference_Titel

Transparent Optical Networks (ICTON), 2013 15th International Conference on

Conference_Location

Cartagena

ISSN

2161-2056

Type

conf

DOI

10.1109/ICTON.2013.6602840

Filename

6602840