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Article

Non-Invasive Visualization of Ferroelectric Domain Structures on the Non-Polar y-Surface of KTiOPO4 via Raman Imaging

1
Department of Physics, University of Paderborn, Warburger Strasse 100, 33098 Paderborn, Germany
2
Institute of Applied Physics, Technical University Dresden, Nöthnitzer Straße 61, 01187 Dresden, Germany
3
Center for Optoelectronics and Photonics (CeOPP), Warburger Strasse 100, 33098 Paderborn, Germany
*
Author to whom correspondence should be addressed.
Academic Editors: Guisheng Xu and Yizheng Tang
Crystals 2021, 11(9), 1086; https://doi.org/10.3390/cryst11091086
Received: 6 August 2021 / Revised: 1 September 2021 / Accepted: 3 September 2021 / Published: 7 September 2021
(This article belongs to the Special Issue Ferroelectric and Piezoelectric Crystals)
Potassium titanyl phosphate (KTP) is a nonlinear optical material with applications in high-power frequency conversion or quasi-phase matching in submicron period domain grids. A prerequisite for these applications is a precise control and understanding of the poling mechanisms to enable the fabrication of high-grade domain grids. In contrast to the widely used material lithium niobate, the domain growth in KTP is less studied, because many standard methods, such as selective etching or polarization microscopy, provides less insight or are not applicable on non-polar surfaces, respectively. In this work, we present results of confocal Raman-spectroscopy of the ferroelectric domain structure in KTP. This analytical method allows for the visualization of domain grids of the non-polar KTP y-face and therefore more insight into the domain-growth and -structure in KTP, which can be used for improved domain fabrication. View Full-Text
Keywords: Raman spectroscopy; KTP; periodic poling; ferroelectric domains; Raman imaging Raman spectroscopy; KTP; periodic poling; ferroelectric domains; Raman imaging
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MDPI and ACS Style

Brockmeier, J.; Mackwitz, P.W.M.; Rüsing, M.; Eigner, C.; Padberg, L.; Santandrea, M.; Silberhorn, C.; Zrenner, A.; Berth, G. Non-Invasive Visualization of Ferroelectric Domain Structures on the Non-Polar y-Surface of KTiOPO4 via Raman Imaging. Crystals 2021, 11, 1086. https://doi.org/10.3390/cryst11091086

AMA Style

Brockmeier J, Mackwitz PWM, Rüsing M, Eigner C, Padberg L, Santandrea M, Silberhorn C, Zrenner A, Berth G. Non-Invasive Visualization of Ferroelectric Domain Structures on the Non-Polar y-Surface of KTiOPO4 via Raman Imaging. Crystals. 2021; 11(9):1086. https://doi.org/10.3390/cryst11091086

Chicago/Turabian Style

Brockmeier, Julian, Peter Walter Martin Mackwitz, Michael Rüsing, Christof Eigner, Laura Padberg, Matteo Santandrea, Christine Silberhorn, Artur Zrenner, and Gerhard Berth. 2021. "Non-Invasive Visualization of Ferroelectric Domain Structures on the Non-Polar y-Surface of KTiOPO4 via Raman Imaging" Crystals 11, no. 9: 1086. https://doi.org/10.3390/cryst11091086

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