Thursday, June 6, 2013

TOMORROW: Seminar: "Silver containing phosphate glasses for multi-scale structured optical materials" by Thierry Cardinal / 6.7.13 / 11:00am-12:00pm / Room 102

"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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