29 research outputs found
Structure, nonlinear properties, and photosensitivity of (GeSe2)​100-​x(Sb2Se3)​x glasses
International audienceChalcogenide glasses from (GeSe2)​100-​x(Sb2Se3)​x system were synthesized, with x varying from 5 to 70, in order to evaluate the influence of antimony selenide addn. on nonlinear optical properties and photosensitivity. Nonlinear refractive index and two photon absorption coeffs. were measured both at 1064 nm in picosecond regime using the Z-​scan technique and at 1.55 μm in femtosecond regime using an original method based on direct anal. of beam profile change while propagating in the chalcogenide glasses. The study of their photosensitivity at 1.55 μm revealed highly glass compn. dependent behavior and quasi-​photostable compns. have been identified in femtosecond regime. To better understand these characteristics, the evolution of the glass transition temp., d. and structure with the chem. compn. were detd
Digestibilidade aparente de dietas com diferentes nĂveis de farelo de canola para cavalos
Morphology of fruits, seeds, seedlings and saplings of three species of Macrolobium Schreb. (Leguminosae, Caesalpinioideae) in the Brazilian Amazon floodplain
BIS(8-METHOXYNAPHTHYLHYDRIDO)SILICON AND -GERMANIUM TRIFLATES AND IODIDES: STABILIZATION OF GROUP 14 METAL CATIONS
An overview of low noise devices and associated circuits for 100-200 GHz space applications
Biomass burning in the tropical savannas of Ivory Coast: An overview of the field experiment Fire of Savannas (FOS/DECAFE 91)
International audienc