In:
Journal of the American Ceramic Society, Wiley, Vol. 102, No. 4 ( 2019-04), p. 1710-1719
Abstract:
Bismuth (Bi)‐doped laser glasses with broadband emission are of current interest in the fields of sensing, bio‐imaging, and photonics. For practical applications, it must be considered how to improve the emission efficiency, in particular, for borate glasses with wide glass‐forming range, low melting point, and excellent fiberizing ability. Herein, we experimentally demonstrate that addition of GeO 2 to aluminoborate glasses can effectively enhance Bi NIR emission by more than 300 times with prolonged decay time (~500 μs) and good homogeneity, which is, to our best knowledge, seldom achieved in Bi‐doped borate multi‐component glasses. The addition of second glass‐former GeO 2 , as revealed by detailed optical and structural analysis, leads to the facile regulation on local glass structure, forcing the conversion of aluminum species from AlO 5 and AlO 6 to AlO 4 and consequently pushes the conversion of Bi 3+ to Bi + and Bi 0 and stabilizes Bi NIR centers, which finally results in highly enhanced Bi NIR emission. We believe these results could contribute to designing Bi‐activated multi‐component laser glass and fibers with efficient NIR photoemission.
Type of Medium:
Online Resource
ISSN:
0002-7820
,
1551-2916
DOI:
10.1111/jace.2019.102.issue-4
Language:
English
Publisher:
Wiley
Publication Date:
2019
detail.hit.zdb_id:
2008170-4
detail.hit.zdb_id:
219232-9
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