Affiliation:
1. Belarusian National Technical University
2. Belarusian National Technical University
Abstract
We determined the thermo-optic coefficients of
C
r
3
+
-doped beryllium hexaaluminate crystal (
C
r
3
+
:
B
e
A
l
6
O
10
) for light polarizations
E
|
|
N
p
,
N
m
, and
N
g
, and present the thermo-optic dispersion formulas for the principal thermo-optic coefficients of
C
r
3
+
:
B
e
A
l
6
O
10
. We also measured the linear thermal expansion coefficients for this crystal in the directions of optical indicatrix axes
N
p
,
N
m
, and
N
g
. Finally, we modeled the thermo-optic dispersion data in accordance with theory, taking into account contributions both from the change of the electronic bandgap with temperature and from the volumetric thermal expansion coefficient.
Funder
State Research Program of Republic of Belarus
Subject
Atomic and Molecular Physics, and Optics,Statistical and Nonlinear Physics