Accession Number:

ADP011560

Title:

Thermo and Photoluminescence of Silicate Laser Glass Doped with Neodymium

Descriptive Note:

Corporate Author:

NATIONAL INST OF MATERIALS PHYSICS BUCHAREST (ROMANIA)

Personal Author(s):

• Grigoras, B.
• Cerscez, M.
• Ionescu, L.
• Secu, M.
• Matei, L.

Report Date:

2001-06-01

Pagination or Media Count:

4.0

Abstract:

The luminescence and thermoluminescence have been measured in vitreous materials doped with Nd3. The luminescence spectra show a maximum at 400 nm and a shoulder at about 440 nm. The measured global thermoluminescence shows a broad band with a maximum at 270 degrees centigrade, which suggests a continuous distribution of electron traps induced by ionizing radiation. Thermoluminescence measured through two optical filters which transmit at about 400 nm and 440 nm wavelength shows a structured behavior with two glow peaks at 270 degrees centigrade and 330 degrees centigrade. This apparently contradictory behavior has been explained by the existence in this material of a continuous distribution of trap levels and a discrete distribution of recombination levels.

Descriptors:

• *PHOTOLUMINESCENCE
• *GLASS
• *THERMOLUMINESCENCE
• RADIATION
• SYMPOSIA
• LASERS
• DOPING
• RECOMBINATION REACTIONS
• NEODYMIUM
• SILICATES
• OPTICAL FILTERS
• RUMANIA
• VITREOUS STATE

Subject Categories:

• Ceramics, Refractories and Glass
• Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE