Electro-optical properties of BaTiO3-SrTiO3 multilayer thin films for waveguide modulators

Jussi Hiltunen; Mikko Karppinen; Pentti Karioja; J. Lappalainen; J. Puustinen; V. Lantto; Harry L. Tuller

doi:10.1117/12.781163

Electro-optical properties of BaTiO₃-SrTiO₃ multilayer thin films for waveguide modulators

Jussi Hiltunen, Mikko Karppinen, Pentti Karioja, J. Lappalainen, J. Puustinen, V. Lantto, Harry L. Tuller

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

3 Citations (Scopus)

Abstract

Optical properties of ferroelectric BaTiO₃ (BTO) and paraelectric SrTiO₃ (STO) multilayer structures were investigated as a possible material choice for thin-film electro-optic devices. It has been demonstrated that dielectric properties can be enhanced by optimizing the stacking periodicity of BTO-STO superlattices, and in this work, it was studied how the shifts in permittivity are transferred to the optical properties. BTO-STO superlattices with stacking periodicity varying between 27 Å and 1670 Å were grown on MgO substrates by pulsed laser deposition. In X-ray diffraction patterns, periodic satellite peaks were observed indicating the formation artificial superlattices. The evolution of electro-optic response with varying stacking periodicity was analyzed by ellipsometric transmission method. The electro-optic response reached a maximum at a stacking periodicity of 105 Å corresponding the individual layer thickness of 13 unit cells. The suitability of superlattices, and also single layer BTO thin films, in planar optical devices were evaluated by fabricating and characterizing Mach-Zehnder waveguide modulators. (23 refs.)

Original language	English
Title of host publication	Silicon Photonics and Photonic Integrated Circuits
Publisher	International Society for Optics and Photonics SPIE
Pages	69960H-1-8
DOIs	https://doi.org/10.1117/12.781163
Publication status	Published - 2008
MoE publication type	A4 Article in a conference publication
Event	SPIE Photonics Europe 2008: Silicon Photonics and Photonic Integrated Circuits - Strasbourg, France Duration: 7 Apr 2008 → 10 Apr 2008

Publication series

Series	Proceedings of SPIE
Volume	69960

Conference

Conference	SPIE Photonics Europe 2008
Country/Territory	France
City	Strasbourg
Period	7/04/08 → 10/04/08

Access to Document

10.1117/12.781163

Cite this

@inproceedings{f0952d23920140d0bcdfb39cbaba4112,

title = "Electro-optical properties of BaTiO3-SrTiO3 multilayer thin films for waveguide modulators",

abstract = "Optical properties of ferroelectric BaTiO3 (BTO) and paraelectric SrTiO3 (STO) multilayer structures were investigated as a possible material choice for thin-film electro-optic devices. It has been demonstrated that dielectric properties can be enhanced by optimizing the stacking periodicity of BTO-STO superlattices, and in this work, it was studied how the shifts in permittivity are transferred to the optical properties. BTO-STO superlattices with stacking periodicity varying between 27 {\AA} and 1670 {\AA} were grown on MgO substrates by pulsed laser deposition. In X-ray diffraction patterns, periodic satellite peaks were observed indicating the formation artificial superlattices. The evolution of electro-optic response with varying stacking periodicity was analyzed by ellipsometric transmission method. The electro-optic response reached a maximum at a stacking periodicity of 105 {\AA} corresponding the individual layer thickness of 13 unit cells. The suitability of superlattices, and also single layer BTO thin films, in planar optical devices were evaluated by fabricating and characterizing Mach-Zehnder waveguide modulators. (23 refs.)",

author = "Jussi Hiltunen and Mikko Karppinen and Pentti Karioja and J. Lappalainen and J. Puustinen and V. Lantto and Tuller, {Harry L.}",

year = "2008",

doi = "10.1117/12.781163",

language = "English",

series = "Proceedings of SPIE",

publisher = "International Society for Optics and Photonics SPIE",

pages = "69960H--1--8",

booktitle = "Silicon Photonics and Photonic Integrated Circuits",

address = "United States",

note = "SPIE Photonics Europe 2008 : Silicon Photonics and Photonic Integrated Circuits ; Conference date: 07-04-2008 Through 10-04-2008",

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Hiltunen, J , Karppinen, M, Karioja, P, Lappalainen, J, Puustinen, J, Lantto, V & Tuller, HL 2008, Electro-optical properties of BaTiO₃-SrTiO₃ multilayer thin films for waveguide modulators. in Silicon Photonics and Photonic Integrated Circuits. International Society for Optics and Photonics SPIE, Proceedings of SPIE, vol. 69960, pp. 69960H-1-8, SPIE Photonics Europe 2008, Strasbourg, France, 7/04/08. https://doi.org/10.1117/12.781163

Electro-optical properties of BaTiO₃-SrTiO₃ multilayer thin films for waveguide modulators. / Hiltunen, Jussi ; Karppinen, Mikko; Karioja, Pentti et al.
Silicon Photonics and Photonic Integrated Circuits. International Society for Optics and Photonics SPIE, 2008. p. 69960H-1-8 (Proceedings of SPIE, Vol. 69960).

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

TY - GEN

T1 - Electro-optical properties of BaTiO3-SrTiO3 multilayer thin films for waveguide modulators

AU - Hiltunen, Jussi

AU - Karppinen, Mikko

AU - Karioja, Pentti

AU - Lappalainen, J.

AU - Puustinen, J.

AU - Lantto, V.

AU - Tuller, Harry L.

PY - 2008

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N2 - Optical properties of ferroelectric BaTiO3 (BTO) and paraelectric SrTiO3 (STO) multilayer structures were investigated as a possible material choice for thin-film electro-optic devices. It has been demonstrated that dielectric properties can be enhanced by optimizing the stacking periodicity of BTO-STO superlattices, and in this work, it was studied how the shifts in permittivity are transferred to the optical properties. BTO-STO superlattices with stacking periodicity varying between 27 Å and 1670 Å were grown on MgO substrates by pulsed laser deposition. In X-ray diffraction patterns, periodic satellite peaks were observed indicating the formation artificial superlattices. The evolution of electro-optic response with varying stacking periodicity was analyzed by ellipsometric transmission method. The electro-optic response reached a maximum at a stacking periodicity of 105 Å corresponding the individual layer thickness of 13 unit cells. The suitability of superlattices, and also single layer BTO thin films, in planar optical devices were evaluated by fabricating and characterizing Mach-Zehnder waveguide modulators. (23 refs.)

AB - Optical properties of ferroelectric BaTiO3 (BTO) and paraelectric SrTiO3 (STO) multilayer structures were investigated as a possible material choice for thin-film electro-optic devices. It has been demonstrated that dielectric properties can be enhanced by optimizing the stacking periodicity of BTO-STO superlattices, and in this work, it was studied how the shifts in permittivity are transferred to the optical properties. BTO-STO superlattices with stacking periodicity varying between 27 Å and 1670 Å were grown on MgO substrates by pulsed laser deposition. In X-ray diffraction patterns, periodic satellite peaks were observed indicating the formation artificial superlattices. The evolution of electro-optic response with varying stacking periodicity was analyzed by ellipsometric transmission method. The electro-optic response reached a maximum at a stacking periodicity of 105 Å corresponding the individual layer thickness of 13 unit cells. The suitability of superlattices, and also single layer BTO thin films, in planar optical devices were evaluated by fabricating and characterizing Mach-Zehnder waveguide modulators. (23 refs.)

U2 - 10.1117/12.781163

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M3 - Conference article in proceedings

T3 - Proceedings of SPIE

SP - 69960H-1-8

BT - Silicon Photonics and Photonic Integrated Circuits

PB - International Society for Optics and Photonics SPIE

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