Observation of spontaneous polarization misalignments in periodically poled crystals using second-harmonic generation microscopy

Yu Yi Tzeng*, Zong Yan Zhuo, Ming Yin Lee, Chien Sheng Liao, Pei Chun Wu, Chin Jie Huang, Ming-Che Chan, Tzu Ming Liu, Yen Yin Lin, Shi Wei Chu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

Periodically poled crystal (PPC) is a key component for nonlinear optical applications. Its poling quality relies largely on successful domain inversion and the alignment of spontaneous polarization (SP) vectors in each domain. Here we report the unexpected observation of bulk second harmonic generation (SHG) in PPC when excitation propagating along its optical axis. Based on its tensorial nature, SHG is highly sensitive to the orientation of SP, and therefore the misalignment of SP in each domain of PPC can be revealed noninvasively by SHG microscopy. This nonlinear imaging modality provides optical sectioning capability with 3D sub-micrometer resolution, so it will be useful for in situ investigation of poling quality in PPC.

Original languageEnglish
Pages (from-to)11106-11113
Number of pages8
JournalOptics Express
Volume19
Issue number12
DOIs
StatePublished - 6 Jun 2011

Fingerprint Dive into the research topics of 'Observation of spontaneous polarization misalignments in periodically poled crystals using second-harmonic generation microscopy'. Together they form a unique fingerprint.

Cite this