Title :
Stable two-dimensional spatial solitons in heavy metal oxide glasses
Author :
Pasquazi, A. ; Stivala, S. ; Assanto, G. ; Gonzalo, J. ; Afonso, C. ; Solis, J.
Author_Institution :
Univ. "Roma Tre", Rome
Abstract :
In this Communication, a stable self-confined propagation with ps near-infrared (NIR) pulses and over several Rayleigh lengths is demonstrated for the first time . Multiphoton absorption is shown to saturate the self-focusing response in a novel glass of the ternary system Nb2O5-O2-PbO (NPG) exhibiting a high refractive index (2-2.1) in the NIR and an energy gap of 3.52 eV. NPG belongs to the family of heavy metal oxides, widely studied for its fast and high nonlinearity in the infrared.
Keywords :
Rayleigh scattering; germanium compounds; high-speed optical techniques; lead compounds; multiphoton processes; niobium compounds; optical glass; optical self-focusing; optical solitons; Nb2O5-GeO2-PbO; Rayleigh lengths; heavy metal oxide glasses; multiphoton absorption; near-infrared pulses; refractive index; self-confined propagation; self-focusing; two-dimensional spatial solitons; Electromagnetic wave absorption; Glass; Laser beams; Nonlinear optics; Optical refraction; Optical saturation; Optical solitons; Optical variables control; Photonics; Ultrafast optics;
Conference_Titel :
Lasers and Electro-Optics, 2007 and the International Quantum Electronics Conference. CLEOE-IQEC 2007. European Conference on
Conference_Location :
Munich
Print_ISBN :
978-1-4244-0931-0
Electronic_ISBN :
978-1-4244-0931-0
DOI :
10.1109/CLEOE-IQEC.2007.4386878
