In:
Journal of the Optical Society of America B, Optica Publishing Group, Vol. 38, No. 11 ( 2021-11-01), p. 3222-
Abstract:
T m 3 + / H o 3 + -codoped low silica calcium
aluminosilicate (LSCAS) glasses were prepared and characterized using optical absorption, luminescence decay, and thermal lens techniques.
The emission band at 2.0 µm exhibited an enhancement when the Ho concentration was increased. The luminescence quantum efficiency
values were determined for both 3 F 4 and 5 I 7 levels of T m 3 + and H o 3 + ions, respectively. The high decrease
of the quantum efficiency of the 3 F 4 ( T m 3 + ) level for high H o 3 + concentration evidenced efficient
energy transfer processes from T m 3 + to H o 3 + . The heat generated in the energy
transfer processes were estimated via a thermal lens experiment, and a rate equation model was proposed to explain the obtained result. The
experimental and estimated parameters with the proposed theoretical model are in good agreement. Finally, the results of this work suggest
the T m 3 + / H o 3 + -codoped LSCAS is a promising material
for applications using the emission around 2.0 µm that is of great interest for biomedical applications.
Type of Medium:
Online Resource
ISSN:
0740-3224
,
1520-8540
DOI:
10.1364/JOSAB.434568
Language:
English
Publisher:
Optica Publishing Group
Publication Date:
2021
Bookmarklink