Title :
Experimental evidence of positive and negative nonlinear refractive index change in As2Se3
Author :
Boudebs, G. ; Cherukulappurath, S. ; Leblond, H. ; Sanchez, F. ; Troles, J. ; Smektala, F.
Author_Institution :
Lab. POMA, Univ. d´´Angers, Angers, France
Abstract :
In this paper we present spatially resolved experimental observations of simultaneous presence of positive and negative nonlinear dephasing response in chalcogenide optical glass As2Se3. The technique is based on a pump/probe experiment using a Mach-Zehnder interferometer combined with a CCD camera where only one laser shot is needed to obtain a great number of measurement. The positive and negative nonlinear refractive index change in As2Se3 is discussed.
Keywords :
CCD image sensors; Mach-Zehnder interferometers; arsenic compounds; chalcogenide glasses; measurement by laser beam; optical glass; refractive index; refractive index measurement; As2Se3; CCD camera; Mach-Zehnder interferometer; chalcogenide optical glass; laser shot; negative nonlinear dephasing response; negative nonlinear refractive index; positive nonlinear dephasing response; positive nonlinear refractive index; pump-probe experiment; Glass; Laser excitation; Nonlinear optics; Optical interferometry; Optical pumping; Optical refraction; Optical variables control; Probes; Refractive index; Spatial resolution;
Conference_Titel :
Lasers and Electro-Optics Europe, 2003. CLEO/Europe. 2003 Conference on
Print_ISBN :
0-7803-7734-6
DOI :
10.1109/CLEOE.2003.1312294
