Optical properties of BaTiO3 thin films: Influence of oxygen pressure utilized during pulsed laser deposition

Jussi Hiltunen (Corresponding Author), D. Seneviratne, R. Sun, M. Stolfi, H.L. Tuller, J. Lappalainen, V. Lantto

Research output: Contribution to journalArticleScientificpeer-review

6 Citations (Scopus)

Abstract

The crystallographic properties of BaTiO3 thin films, grown by pulsed laser deposition on MgO substrates, were found to be strongly influenced by the oxygen pressure used during growth. Low pressure grown films were c-oriented while increasing oxygen pressure produced films with preferred a-orientation. The crystal reorientation resulted in the shift of optical birefringence from +0.04 to −0.025 with low levels of birefringence in films possessing low tetragonal distortion. Mach-Zehnder electro-optic waveguide modulators were fabricated to characterize the electro-optic properties of the deposited films and to evaluate the suitability of these films for planar optical applications. An effective electro-optic coefficient of 23 pm/V was obtained for a c-axis oriented film near the crystal ca reorientation point.
Original languageEnglish
Pages (from-to)416-420
Number of pages5
JournalJournal of Electroceramics
Volume22
Issue number4
DOIs
Publication statusPublished - 2009
MoE publication typeA1 Journal article-refereed

Fingerprint

Pulsed laser deposition
pulsed laser deposition
Optical properties
Oxygen
optical properties
Thin films
oxygen
Electrooptical effects
thin films
electro-optics
Birefringence
retraining
birefringence
Crystals
Crystal orientation
Modulators
Mach number
crystals
modulators
Waveguides

Keywords

  • BaTiO3
  • birefringence
  • electro-optic
  • thin films

Cite this

Hiltunen, Jussi ; Seneviratne, D. ; Sun, R. ; Stolfi, M. ; Tuller, H.L. ; Lappalainen, J. ; Lantto, V. / Optical properties of BaTiO3 thin films : Influence of oxygen pressure utilized during pulsed laser deposition. In: Journal of Electroceramics. 2009 ; Vol. 22, No. 4. pp. 416-420.
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abstract = "The crystallographic properties of BaTiO3 thin films, grown by pulsed laser deposition on MgO substrates, were found to be strongly influenced by the oxygen pressure used during growth. Low pressure grown films were c-oriented while increasing oxygen pressure produced films with preferred a-orientation. The crystal reorientation resulted in the shift of optical birefringence from +0.04 to −0.025 with low levels of birefringence in films possessing low tetragonal distortion. Mach-Zehnder electro-optic waveguide modulators were fabricated to characterize the electro-optic properties of the deposited films and to evaluate the suitability of these films for planar optical applications. An effective electro-optic coefficient of 23 pm/V was obtained for a c-axis oriented film near the crystal c→a reorientation point.",
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Optical properties of BaTiO3 thin films : Influence of oxygen pressure utilized during pulsed laser deposition. / Hiltunen, Jussi (Corresponding Author); Seneviratne, D.; Sun, R.; Stolfi, M.; Tuller, H.L.; Lappalainen, J.; Lantto, V.

In: Journal of Electroceramics, Vol. 22, No. 4, 2009, p. 416-420.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Optical properties of BaTiO3 thin films

T2 - Influence of oxygen pressure utilized during pulsed laser deposition

AU - Hiltunen, Jussi

AU - Seneviratne, D.

AU - Sun, R.

AU - Stolfi, M.

AU - Tuller, H.L.

AU - Lappalainen, J.

AU - Lantto, V.

PY - 2009

Y1 - 2009

N2 - The crystallographic properties of BaTiO3 thin films, grown by pulsed laser deposition on MgO substrates, were found to be strongly influenced by the oxygen pressure used during growth. Low pressure grown films were c-oriented while increasing oxygen pressure produced films with preferred a-orientation. The crystal reorientation resulted in the shift of optical birefringence from +0.04 to −0.025 with low levels of birefringence in films possessing low tetragonal distortion. Mach-Zehnder electro-optic waveguide modulators were fabricated to characterize the electro-optic properties of the deposited films and to evaluate the suitability of these films for planar optical applications. An effective electro-optic coefficient of 23 pm/V was obtained for a c-axis oriented film near the crystal c→a reorientation point.

AB - The crystallographic properties of BaTiO3 thin films, grown by pulsed laser deposition on MgO substrates, were found to be strongly influenced by the oxygen pressure used during growth. Low pressure grown films were c-oriented while increasing oxygen pressure produced films with preferred a-orientation. The crystal reorientation resulted in the shift of optical birefringence from +0.04 to −0.025 with low levels of birefringence in films possessing low tetragonal distortion. Mach-Zehnder electro-optic waveguide modulators were fabricated to characterize the electro-optic properties of the deposited films and to evaluate the suitability of these films for planar optical applications. An effective electro-optic coefficient of 23 pm/V was obtained for a c-axis oriented film near the crystal c→a reorientation point.

KW - BaTiO3

KW - birefringence

KW - electro-optic

KW - thin films

U2 - 10.1007/s10832-008-9463-9

DO - 10.1007/s10832-008-9463-9

M3 - Article

VL - 22

SP - 416

EP - 420

JO - Journal of Electroceramics

JF - Journal of Electroceramics

SN - 1385-3449

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ER -