Ridge-shape phase distribution adjacent to 180° domain wall in congruent LiNbO3 crystal

The digital holographic interferometry is used in the dynamic and static measurements of phase variation induced by domain inversion. For the first time, to the authors’ knowledge, they observe the existence of ridge-shape phase distribution adjacent to 180° domain wall in congruent LiNbO3 crystal. During the domain wall motion, the phase variations are not uniform but have obvious relaxations. In the static measurement, the ridge elevation can vary linearly with the uniform electric field. The reasonable assumptions are proposed to explain these effects.

[1]  V. Gopalan,et al.  The role of nonstoichiometry in 180° domain switching of LiNbO3 crystals , 1998 .

[2]  Umar Mohideen,et al.  Direct Observation of Pinning and Bowing of a Single Ferroelectric Domain Wall , 1999 .

[3]  V. Gopalan,et al.  Optical index profile at an antiparallel ferroelectric domain wall in lithium niobate , 2005 .

[4]  Myung K. Kim,et al.  Wavelength-scanning digital interference holography for tomographic three-dimensional imaging by use of the angular spectrum method. , 2005, Optics letters.

[5]  Q. X. Jia,et al.  In situ video observation of 180° domain kinetics in congruent LiNbO3 crystals , 1999 .

[6]  V. Gopalan,et al.  Direct x-ray synchrotron imaging of strains at 180° domain walls in congruent LiNbO3 and LiTaO3 crystals , 2000 .

[7]  Corin B. E. Gawith,et al.  Demonstration and optical characteristics of electro-optic Bragg modulators in periodically poled lithium niobate in the near-infrared , 2002 .

[8]  Y. Zhi,et al.  Electrochromism accompanying ferroelectric domain inversion in congruent RuO2:LiNbO3 crystal. , 2005, Optics express.

[9]  David A. Scrymgeour,et al.  Nanoscale piezoelectric response across a single antiparallel ferroelectric domain wall , 2005, cond-mat/0503230.

[10]  George Panotopoulos,et al.  Electrooptic properties of lithium niobate crystals for extremely high external electric fields , 2003 .

[11]  Domenico Alfieri,et al.  In-situ visualization, monitoring and analysis of electric field domain reversal process in ferroelectric crystals by digital holography. , 2004, Optics express.

[12]  Fredrik Laurell,et al.  Nanoscale imaging of domains and domain walls in periodically poled ferroelectrics using atomic force microscopy , 2002 .

[13]  Ady Arie,et al.  Electron-beam-induced domain poling in LiNbO3 for two-dimensional nonlinear frequency conversion , 2006 .

[14]  A. Snigirev,et al.  Phase-mapping of periodically domain-inverted LiNbO3 with coherent X-rays , 1998, Nature.

[15]  V. Gopalan,et al.  Long-range strains and the effects of applied field at 180° ferroelectric domain walls in lithium niobate , 2003 .