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Potassium tantalate-niobate mixed crystal thin films for applications in nonlinear integrated optics

: Jia, Yuechen; Winkler, Markus; Szabados, Jan; Breunig, Ingo; Kirste, Lutz; Cimalla, Volker; Zukauskaite, Agne; Buse, Karsten

Volltext urn:nbn:de:0011-n-4587695 (489 KByte PDF)
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Erstellt am: 1.8.2017

Institute of Physics -IOP-, London:
Photorefractive Photonics 2017 : 17-20 July 2017, Qingdao, Shandong, China
Bristol: IOP Publishing, 2017 (Journal of physics. Conference series 867)
Art. 012020, 4 S.
Conference "Photorefractive Photonics" <2017, Qingdao>
Fraunhofer IAF ()
Fraunhofer IPM ()

Potassium tantalate-niobate mixed crystal (KTN) thin films are promising candidates to meet the needs of integrated nonlinear optical devices for electro-optic and frequencyconversion applications. In this contribution we report on pulsed-laser-deposition growth of ferroelectric KTN films on MgO substrates. It is shown that highly-oriented KTN films are epitaxially grown as revealed by X-ray diffraction analysis. Moreover, the thermal annealing treatment can be further optimized to obtain optically smooth KTN films with RMS surface roughness as low as 1 nm.