RED AND NEAR-INFRARED LUMINESCENCE OF UNDOPED CAWO4

Authors
BRYKNAR Z GRASSER R POTUCEK Z SCHARMANN A BOHACEK P
Citation
Z. Bryknar et al., RED AND NEAR-INFRARED LUMINESCENCE OF UNDOPED CAWO4, Journal of luminescence, 72-4, 1997, pp. 643-645
Citations number
4
Categorie Soggetti
Optics
Journal title
Journal of luminescence → ACNP
ISSN journal
00222313
Volume
72-4
Year of publication
1997
Pages
643 - 645
Database
ISI
SICI code
0022-2313(1997)72-4:<643:RANLOU>2.0.ZU;2-L
Abstract
In addition to the blue and green luminescence usually observed, our C aWO4 crystals show a structured low energy emission which consists of two groups of bands in the red (A) and infra-red (B) spectral region. The B emission is attributed to F-4(3/2) --> I-4(9/2) transitions in N d3+ ions by comparison with their absorption properties in CaWO4. We a scribe the A emission to the broadband luminescence of a Ca-rich tungs tate phase, where the observed structure is due to reabsorption caused by Nd3+ ions.