Linear electro-optic properties of relaxor-based ferroelectric 0.24Pb(In1/2Nb1/2)O3-(0.76 -x)Pb(Mg1/3Nb2/3)O3-xPbTiO3single crystals.
Linear electro-optic properties of 0.24Pb(In1/2Nb1/2)O3-(0.76 -x)Pb(Mg1/3Nb2/3)O3-xPbTiO3single crystals, with compositions in the rhombohedral, morphotropic phase boundary (MPB) and tetragonal phases, have been investigated. Very large effective electro-optic coefficient [Formula: see text] (204 pm/V) was observed in a crystal with the MPB composition when it is poled along [001]. The rhombohedral phase (x= 0.27 and 0.30) single crystals poled along [111] direction and tetragonal phase (x= 0.39) single crystal poled along [001] direction are in single domain, and their electro-optic coefficients ([Formula: see text] = 76, 94, and 43 pm/V for the crystals withx= 0.27, 0.30, and 0.39, respectively) were found to be much higher than that of traditional electro-optic single crystal LiNbO3([Formula: see text] = 19.9 pm/V). The electro-optic coefficients of the single crystal in the rhombohedral phase have excellent temperature stability in the experimental temperature range of 10-40 °C. The half-wave voltage [Formula: see text] was calculated to be much lower (less than 1000 V) than that of LiNbO3single crystal (2800 V). These superior properties make the ternary relaxor-PT single crystals very promising for electro-optic modulation applications.
Fengmin
F
Wu
Bin
B
Yang
Enwei
E
Sun
Gang
G
Liu
Hao
H
Tian
Wenwu
W
Cao