Linear Cherenkov radiation in ferroelectric domain walls

Optics Express
Ji YangXianfeng Chen

Abstract

Nonlinear Cherenkov radiation plays an important role in detecting the internal structure of the ferroelectric crystal. However, linear Cherenkov radiation in the ferroelectric crystal was not observed before. Based on mirror symmetry reduction at the domain walls, we theoretically predicted that the linear Cherenkov radiation could be generated in periodically poled ferroelectric crystals according to the coupled wave equation. Then, we experimentally demonstrated the generation of such Cherenkov radiation in domain walls. Compared with the domain region, new nonzero elements χ13, χ23, χ31 and χ32 appear in the linear susceptibility tensor. The experimental results are consistent with our theoretical prediction.

References

Jun 4, 2008·Physical Review Letters·Y ZhangN B Ming
Aug 20, 2010·Optics Express·Xuewei Deng, Xianfeng Chen
Nov 18, 2010·Optics Letters·Wenjie WangWieslaw Krolikowski
Sep 26, 2012·Physical Review Letters·Huaijin RenXianfeng Chen
Jun 1, 2013·Optics Letters·Huaijin RenXianfeng Chen

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