Search results for " non bridging oxygen hole center"

Time Resolved Photoluminescence Associated with Non Bridging Oxygen Hole Centers in Irradiated Silica

2007

Influence of fluorine on the fiber performance studied through the NBOHC-related 1.9 eV microluminescence

2012

International audience; The distribution of Non Bridging Oxygen Hole Centers (NBOHC) in Fluorine doped optical fibers was investigated by confocal microluminescence spectroscopy monitoring the characteristic 1.9 eV luminescence band. The results show that these defects are generated by the fiber drawing and their concentration further increases after γ irradiation. The NBOHC profile along the fiber is anticorrelated to the fluorine content. This finding agrees with the role of fluorine in the fiber toughness and is discussed from the microscopic point of view on the basis of previous works.

Phonon Coupling Properties of Non Bridging Oxygen Hole Centers at a Silica Surface Probed by Site-Selective Luminescence Excitation

2008

Luminescenza risolta in tempo del non bridging oxygen hole center in silice: proprietà di volume e di superficie

2007