Article

Short Communications
2020. V. 58. № 6. P. 942–944
Bilyk V.R., Mishina E.D., Ovchinnikov A.V., Agranat M.B.
Ultrafast modulation of ferroelectric polarization in a $\rm Ba_{0.8}\rm Sr_{0.2}\rm TiO_3$ film with an intensive subperiodic terahertz pulse
Annotation
The results of an experimental and theoretical study of the effect of an intense, single-period terahertz pulse on the ferroelectric polarization in a barium–strontium titanate film are presented. Modulation of the ferroelectric polarization in the field of a terahertz pulse with a strength of up to $23.2$ MV/cm is demonstrated via generation of the second optical harmonic. The presence of a nonlinear dependence of the intensity of the second optical harmonic on the electric field strength of the THz pulse is shown.
Article reference:
Bilyk V.R., Mishina E.D., Ovchinnikov A.V., Agranat M.B. Ultrafast modulation of ferroelectric polarization in a $\rm Ba_{0.8}\rm Sr_{0.2}\rm TiO_3$ film with an intensive subperiodic terahertz pulse, High Temp., 2020. V. 58. № 6. P. 942