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Absolute measurement of three-dimensional polarization direction using scanning nonlinear dielectric Microscopy

Published online by Cambridge University Press:  01 February 2011

Yasuo Cho,
Tomoyuki Sugihara and
Hiroyuki Odagawa
Yasuo Cho
Affiliation:
Research Institute of Electrical Communication, Tohoku University, 2–1–1 Katahira, Aoba-ku, Sendai 980–8577, Japan
Tomoyuki Sugihara
Affiliation:
Research Institute of Electrical Communication, Tohoku University, 2–1–1 Katahira, Aoba-ku, Sendai 980–8577, Japan
Hiroyuki Odagawa
Affiliation:
Research Institute of Electrical Communication, Tohoku University, 2–1–1 Katahira, Aoba-ku, Sendai 980–8577, Japan
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Abstract

A technique for measuring the absolute value of the ferroelectric polarization angle using scanning nonlinear dielectric microscopy (SNDM) is proposed and demonstrated. Using the technique, periodically poled lithium niobate (PPLN) with three-dimensional domain structure is observed. The measured polarization angles agreed well with the actual polarization orientations, and allowed precise visualization of the microdomain structure in PPLN. Through this experiment, we confirmed that SNDM is a useful tool for the absolute evaluation of the three-dimensional polarization direction.

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References

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