Zobrazeno 1 - 10
of 12
pro vyhledávání: '"Denise M. Krol"'
Autor:
Denise M. Krol
Publikováno v:
Journal of Non-Crystalline Solids. 354:416-424
Tight focusing of ultrashort (∼100 fs) infrared laser pulses of moderate energy (typically 1–10 μJ) into a glass results in very high, localized (in space and time) intensities, in excess of 10 14 W/cm 2 . Under these conditions the laser–mate
Autor:
Patricia E. Kalita, Denise M. Krol, Russell J. Hemley, Kristina E. Lipinska-Kalita, Yoshimichi Ohki, Cedric L. Gobin
Publikováno v:
Journal of Non-Crystalline Solids. 352:524-527
Luminescence properties of Cr 3+ ions in a silica-based precursor glass, and in fabricated optically transparent glass-based nanocrystalline composites, have been investigated. The luminescence spectra of the precursor glass revealed a wide range of
Publikováno v:
Journal of the American Ceramic Society. 85:1037-1040
A confocal fluorescence microscopy setup was used to observe, in situ, spectral changes in phosphate glasses which were modified using 0.3 aeJ of tightly focused 800 nm, 130 fs laser pulses. On 488 nm excitation, the modified glass shows a broad fluo
Publikováno v:
Journal of Non-Crystalline Solids. 130:182-186
The structure of sodium aluminosilicate gels of various composition, prepared by sol-gel methods using TEOS and nitrates, was studied with Raman spectroscopy. Some of these gels, 12.5Na2O12.5Al2O375SiO2 (albite) and 7.5Na2O7.5Al2O385SiO2,
Autor:
S. G. Kosinski, J.D. Powers, S.R. Friberg, Eva M. Vogel, M.K. Oliver, Denise M. Krol, Janet Lehr Jackel
Publikováno v:
Journal of Non-Crystalline Solids. 107:244-250
Nonlinear optical glasses with fast response times and very low absorption coefficients are promising materials for use in ultra-fast (picosecond) all-optical switches. We have recently reported a relatively high third-order optical nonlinearity in e
Autor:
J.G. van Lierop, Denise M. Krol
Publikováno v:
Journal of Non-Crystalline Solids. 68:163-166
Publikováno v:
Journal of the American Ceramic Society. 72:1229-1232
Etude des mecanismes de volatilisation et de conservation des ions F − dans un verre issu d'un gel de silice
Publikováno v:
Journal of Non-Crystalline Solids. 111:1-6
Raman spectroscopy was used to investigate the structural and chemical changes of F-doped silica gels as a function of sintering temperature and atmosphere. The results show that, regardless of the initial gelation conditions, most SiF groups, tha
Autor:
J.G. van Lierop, Denise M. Krol
Publikováno v:
Journal of Non-Crystalline Solids. 63:131-144
The densification of gels to glasses with composition SiO 2 and 8Al 2 O 3 92SiO 2 has been studied as a function of heat treatment between 120 and 1200°C using Raman spectroscopy together with measurements of density and specific surface area. Mo
Autor:
S. G. Kosinski, Denise M. Krol, Thomas M. Duncan, J. B. MacChesney, D.C. Douglas, Jay R. Simpson
Publikováno v:
Journal of Non-Crystalline Solids. 105:45-52
The nature of Al and P incorporation into vitreous silica, prepared by the MCVD process, was investigated using Raman and NMR spectroscopy. Both spectroscopic techniques show the presence of AlPO4-like units, i.e. Al and P substituting for 2 Si in th