Abstract
In the optical energy gap, visible and near-IR emission of halide phosphate glasses with a composition of 40P
2
O
5
-30ZnO-20LiCl-10BaF
2
in mol% doped with 3.5 × 10
4
ppm Pr
2
O
3
, referred to as PZLBPr, were synthesized. The UV-VIS-NIR and spectroscopic properties of these glasses were also predicted. The current glasses had broadband emission photoluminescence covering a wavelength range of 1250 to 1700 nm when excited at 455 nm. These bands for near-infrared emission luminescence relate to the transitions
1
G
4
→
3
H
5
,
1
D
2
→
1
G
4
, and
3
H
4
→
3
F
3
,
3
F
4
in the optical telecommunication window. The significant PL emission wideband was caused by the radiative transition from Pr
3+
:
1
D
2
to
1
G
4
. At 445 nm excitation, these glasses exhibited emission bands that corresponded to blue/reddish orange spectral ranges in visible ranges. The prepared glass has a high lasing quality factor (Ω
4
/Ω
6
= 0.9), high optical energy (4.72 eV), and quantum efficiency = 87.3% with FWHM = 156 nm of transition emission from the
1
D
2
→
1
G
4
level. As a result, broadband near infrared optical amplifiers can be fabricated from the prepared glasses.