Luu-Gen Hwa, John Schroeder, and Xue-Shu Zhao, "Intrinsic Brillouin linewidths and stimulated Brillouin gain coefficients in glasses studied by inelastic light scattering," J. Opt. Soc. Am. B 6, 833-839 (1989)
Rayleigh–Brillouin scattering measurements on various multicomponent halide glasses and some selected oxide glasses were performed. The Brillouin linewidth measurements, the Brillouin intensities, and Brillouin frequency shifts allowed us to calculate the phonon attenuation, Pockels elasto-optic coefficients, and the stimulated Brillouin scattering gain coefficients. Brillouin linewidths obtained experimentally range between the limit of 21 MHz for an 88BeF2–12ThF4 glass and 213 MHz for a zirconium barium lanthanum fluoride glass. The parameter obtained in this study shows that the threshold power for the onset of stimulated Brillouin scattering in some halide glasses is greater than that for silicate glasses, which has important ramifications as a selection criterion for halide-based glasses as single-mode optical waveguide materials.
M. Deroh, J.-C. Beugnot, K. Hammani, C. Finot, J. Fatome, F. Smektala, H. Maillotte, T. Sylvestre, and B. Kibler J. Opt. Soc. Am. B 37(12) 3792-3800 (2020)
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ZBL: 62ZrF4–33BaF2–5LaF3,
All sample compositions in mole percent.
Table 2
Elastic Constants, Intrinsic Brillouin Linewidths, Pockels Coefficients, Phonon Attenuations, and Brillouin Shifts for Borate Glasses at 0.488 μm and 300 K
Sample (mol %)
xLi2O
yB2O3
zA12O3
C11 (GPa)
ΔΓB (MHz)
|P12|
α (102 cm−1)
ΔνBL (GHz)
4.97
94.27
0.13
37.01
100
0.2661
7.199
19.04
7.46
91.79
0.13
36.80
116
0.3017
8.342
18.98
7.48
91.77
0.13
31.20
113
0.2641
8.795
17.54
7.48
81.80
10.09
54.18
124
0.2870
7.624
22.69
9.98
89.28
0.12
43.08
138
0.3244
9.322
20.52
14.97
84.31
0.12
55.64
104
0.1437
6.248
23.31
0
10K2O 90B2O3
35.61
104
0.2173
7.80
18.26
0
30K2O 70B2O3
53.16
134
0.2028
8.70
21.36
Table 3
Elastic Constants, Intrinsic Linewidths, Pockels Coefficients, Phonon Attenuations, and Brillouin Shifts for Silicate Glasses at 0.488 μm and 300 K
ZBL: 62ZrF4–33BaF2–5LaF3,
All sample compositions in mole percent.
Table 2
Elastic Constants, Intrinsic Brillouin Linewidths, Pockels Coefficients, Phonon Attenuations, and Brillouin Shifts for Borate Glasses at 0.488 μm and 300 K
Sample (mol %)
xLi2O
yB2O3
zA12O3
C11 (GPa)
ΔΓB (MHz)
|P12|
α (102 cm−1)
ΔνBL (GHz)
4.97
94.27
0.13
37.01
100
0.2661
7.199
19.04
7.46
91.79
0.13
36.80
116
0.3017
8.342
18.98
7.48
91.77
0.13
31.20
113
0.2641
8.795
17.54
7.48
81.80
10.09
54.18
124
0.2870
7.624
22.69
9.98
89.28
0.12
43.08
138
0.3244
9.322
20.52
14.97
84.31
0.12
55.64
104
0.1437
6.248
23.31
0
10K2O 90B2O3
35.61
104
0.2173
7.80
18.26
0
30K2O 70B2O3
53.16
134
0.2028
8.70
21.36
Table 3
Elastic Constants, Intrinsic Linewidths, Pockels Coefficients, Phonon Attenuations, and Brillouin Shifts for Silicate Glasses at 0.488 μm and 300 K