Quantitative measurement of domain inversion in RuO2 : LiNbO3 crystal by digital holographic interferometry
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2006
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Resumo |
We quantitatively study the domain inversion in a RuO2:LiNbO3 crystal wafer by the digital holographic interferometry. The crystal wafer is placed into one arm of a Mach-Zehnder-type interferometer to record a series of holograms. Making use of the angular spectrum backward propagation algorithm, we reconstruct the optical wave field in the crystal plane. The extracted phase difference from the reconstructed optical wave field is a well linear function of the applied external voltage. We deduce that the linear electro-optic coefficient of the detected RuO2:LiNbO3 crystal sample is 9.1x10(-12) m/V. An unexpected phase contrast at the antiparallel domain wall is observed and the influence of the applied external voltage on it is studied in detail. Also the built-in internal field is quantitatively measured as 0.72 kV/mm. (c) 2006 American Institute of Physics. |
Identificador | |
Idioma(s) |
英语 |
Fonte |
Qu Weijuan;刘德安;职亚楠;Luan Zhu;刘立人;周煜u;Lu Wei;Wang Chunhua.,J. Appl. Phys.,2006,100(5):54108- |
Palavras-Chave | #LITHIUM-NIOBATE CRYSTALS #FRINGE-PATTERN ANALYSIS #ELECTROOPTIC IMAGING MICROSCOPY #FOURIER-TRANSFORM METHOD #SITU VIDEO OBSERVATION #LINBO3 CRYSTALS #FERROELECTRIC DOMAINS #CONGRUENT LINBO3 #ELECTRIC-FIELDS #INTERNAL FIELDS |
Tipo |
期刊论文 |