Measurement of the Quadratic Electro-Optic Coefficient of KTN Crystal with an Electro-Optic Modulation System in the Presence of Polar Nano-Regions

Lie-Kun Yang; Bing Liu; Pan-Yu Qiao; Hua-Jian Yu; Xu-Ping Wang; Jing Li; Yu-Guo Yang; Yuan-Yuan Zhang; Cheng-Cheng Qiu; Hua-Di Zhang

doi:10.3390/cryst11101234

Crystals (Oct 2021)

Measurement of the Quadratic Electro-Optic Coefficient of KTN Crystal with an Electro-Optic Modulation System in the Presence of Polar Nano-Regions

Lie-Kun Yang,
Bing Liu,
Pan-Yu Qiao,
Hua-Jian Yu,
Xu-Ping Wang,
Jing Li,
Yu-Guo Yang,
Yuan-Yuan Zhang,
Cheng-Cheng Qiu,
Hua-Di Zhang

Affiliations

Lie-Kun Yang: Advanced Materials Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250014, China
Bing Liu: Advanced Materials Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250014, China
Pan-Yu Qiao: Advanced Materials Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250014, China
Hua-Jian Yu: Advanced Materials Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250014, China
Xu-Ping Wang: Advanced Materials Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250014, China
Jing Li: Advanced Materials Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250014, China
Yu-Guo Yang: Advanced Materials Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250014, China
Yuan-Yuan Zhang: Advanced Materials Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250014, China
Cheng-Cheng Qiu: Advanced Materials Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250014, China
Hua-Di Zhang: Advanced Materials Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250014, China

DOI: https://doi.org/10.3390/cryst11101234
Journal volume & issue: Vol. 11, no. 10
p. 1234

Abstract

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An electro-optic modulation system was adopted for measuring the quadratic electro-optic coefficient of KTN crystal. Theoretical analysis and experimental results verified the feasibility of this method. The quadratic electro-optic coefficient of a KTN crystal chip, which has a Curie temperature of 0 °C, was measured using this system in the temperature range of 2 °C to 18 °C (Tc = 0 °C). The influences of temperature, AC voltage and frequency on the quadratic electro-optic coefficient were discussed. It was found that the relaxation effect of PNRs (polar nano-regions) played an important role in the determination of the quadratic electro-optic coefficient of KTN crystal.

Published in Crystals

ISSN: 2073-4352 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Science: Chemistry: Crystallography
Website: http://www.mdpi.com/journal/crystals/

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