摘要
用干涉仪的方法测量了Ｃｅ：ＢａＴｉＯ３晶体的低频电光系数和压电系数．排除压电效应对光通过晶体引起相位的变化，得到低频下经极化的Ｃｅ：ＢａＴｉＯ３单晶的电光系数ｒ４２＝１９４５±２２０ｐｍ／Ｖ和ｒ１３＝１１８±１ｐｍ／Ｖ．从而。
We have measured,for the first time,the low frequency (unclamped)electro optic and piezoelectric coefficients in Ce:BaTiO 3 crystals using interferometric techniques.When the piezoelectric contribution to the phase change by a beam passing through the crystals is ruled out,the unclamped electro optic coefficients of the poled Ce:BaTiO 3 single crystals are r 42 =1945±220pm/V and r 13 =11 8±1pm/V.Consequently,accurate values of the Pockels coefficients are provided for researching the photorefractive effect and theoretical study of the Ce:BaTiO 3 crystal.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
1997年第4期813-818,共6页
Acta Physica Sinica
基金
国家自然科学基金
