Three‐Dimensional, Time‐Resolved Profiling of Ferroelectric Domain Wall Dynamics by Spectral‐Domain Optical Coherence Tomography
Three‐Dimensional, Time‐Resolved Profiling of Ferroelectric Domain Wall Dynamics by Spectral‐Domain Optical Coherence Tomography
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通过光谱域光学相干断层扫描对铁电畴壁动力学进行三维、时间分辨分析
DOI:
10.1002/andp.201700139
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发表时间:
2017
影响因子:
2.4
通讯作者:
L.M. Eng
中科院分区:
文献类型:
--
作者:
A. Haußmann;L. Kirsten;S. Schmidt;P. Cimalla;L. Wehmeier;E. Koch;L.M. Eng
We apply here spectral‐domain optical coherence tomography (SD‐OCT) for the precise detection and temporal tracking of ferroelectric domain walls (DWs) in magnesium‐doped periodically poled lithium niobate (Mg:PPLN). We reproducibly map static DWs at an axial (depth) resolution down to ∼ 0.6 μm, being located up to 0.5 mm well inside the single crystalline Mg:PPLN sample. We show that a full 3‐dimensional (3D) reconstruction of the DW geometry is possible from the collected data, when applying a special algorithm that accounts for the nonlinear optical dispersion of the material. Our OCT investigation provides valuable reference information on the DWs’ polarization charge distribution, which is known to be the key to the electrical conductivity of ferroelectric DWs in such systems. Hence, we carefully analyze the SD‐OCT signal dependence both when varying the direction of incident polarization, and when applying electrical fields along the polar axis. Surprisingly, the large backreflection intensities recorded under extraordinary polarization are not affected by any electrical field, at least for field strengths below the switching threshold, while no significant signals above noise floor are detected under ordinary polarization. Finally, we employed the high‐speed SD‐OCT setup for the real‐time DW tracking upon ferroelectric domain switching under high external fields.
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DOI:
--
发表时间:
2002
期刊:
影响因子:
--
作者:
H. Chaib;T. Otto;L. Eng
通讯作者:
L. Eng
影响因子:
4
作者:
Kaempfe, T.;Reichenbach, P.;Eng, L. M.
通讯作者:
Eng, L. M.
影响因子:
3.7
作者:
Kaempfe, T.;Reichenbach, P.;Soergel, E.
通讯作者:
Soergel, E.
影响因子:
0.8
作者:
Y. Uesu;H. Shibata;S. Suzuki;S. Shimada
通讯作者:
Y. Uesu;H. Shibata;S. Suzuki;S. Shimada
DOI:
10.1016/j.mseb.2005.02.029
发表时间:
2005-07
影响因子:
3.6
作者:
Sungwon Kim;V. Gopalan
通讯作者:
Sungwon Kim;V. Gopalan