DEFECT POPULATION IN SILICA GLASSES STUDIED BY LUMINESCENCE VUV EXCITATION SPECTROSCOPY

Authors
POUMELLEC B TAUNAY T BERNAGE P CORTES R KRUPA JC
Citation
B. Poumellec et al., DEFECT POPULATION IN SILICA GLASSES STUDIED BY LUMINESCENCE VUV EXCITATION SPECTROSCOPY, Journal of luminescence, 72-4, 1997, pp. 442-445
Citations number
11
Categorie Soggetti
Optics
Journal title
Journal of luminescence → ACNP
ISSN journal
00222313
Volume
72-4
Year of publication
1997
Pages
442 - 445
Database
ISI
SICI code
0022-2313(1997)72-4:<442:DPISGS>2.0.ZU;2-S
Abstract
Defect population in germania-silica optical fibre preform is studied. Seven excitation bands are pointed out in the range 100-300 nm. They are associated with seven different defects. Two of them are new, two others are currently observed in absorption but are never mentioned as giving rise to a luminescence. We show that 248 nm laser irradiation bleaches the defects having an excitation band wavelength close to one of the lasers, whereas the others are unchanged or enhanced.