"Silver containing phosphate glasses for
multi-scale structured optical materials" by Thierry Cardinal
Friday, June 07, 2013 / 11:00 AM to 12:00 PM
CREOL Room 102
Abstract:
The development of optics requires materials adapted to the
fabrication of compact devices. The introduction of silver ions in oxides
glasses enlarges the possibilities when the control of their spatial
distribution can be used for designing compact structures exhibiting
luminescence or nonlinear optical properties. The development of direct laser
writing processes brings access to new approach for multi-scale optical
structuring leading to the local formation of species such as Ag2+, Ag0, silver
clusters or metallic nano-particles. Original local luminescence,
second-harmonic generation (EFISHG) and third-harmonic generation (THG)
properties can be obtained. The control of the spatial distribution of silver
ions, the identification of the different species, as well as the resulting
space charge separation, constitute a main issue for the understanding of the
relation between the photo-induced optical properties and the photo-produced
species. The temperature during the direct laser writing process constitutes a
main parameter to take into account. Chemical, physical and optical
characterizations allow correlating the physical properties to the multi-scale
structure of the optical materials. Such approach could offer low cost
fabrication integrated optical system in the future.
For more information:
Dr. Kathleen A. Cerqua-Richardson
Professor of Optics
407-823-6815
kcr @ creol. ucf . edu
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