[7p-N201-1~12] 9.1 Dielectrics, ferroelectrics

3:30 PM - 3:45 PM JST(6:30 AM - 6:45 AM UTC)

[7p-N201-8] Evaluation of electrostrictive coefficient Q₁₂ and Q₁₄ of KTa_1-xNb_xO₃ crystals.

〇Daiki Takahashi¹, Tadayuki Imai¹ (1.Kyoto Univ. of Adv. Sci.)

Keywords:

KTN,electrostrictive effect,electrooptic effect

KTa_1-Nb_xO₃(KTN) crystals are known for their giant electro-optic effect and are expected to bring about qualitative changes in electro-optic effects. The electrostrictive effect changes the optical path length of a KTN crystal by deforming it. Moreover, the strain due to this effect modulates the refractive index due to photoelastic effect, resulting in changing the optical path. Therefore, it is necessary to evaluate the electrostrictive coefficients of KTN to develop electro-optic devices. In this study, we measured the electrostrictive coefficients Q₁₂ and Q₄₄ of KTN.