Ferroelectric domain engineering by focused infrared femtosecond pulses

Xin Chen; Pawel Karpinski; Vladlen Shvedov; Kaloian Koynov; Bingxia Wang; Jose Trull; Crina Cojocaru; Wieslaw Krolikowski; Yan Sheng

doi:10.1063/1.4932199

Ferroelectric domain engineering by focused infrared femtosecond pulses

Xin Chen, Pawel Karpinski, Vladlen Shvedov, Kaloian Koynov, Bingxia Wang, Jose Trull, Crina Cojocaru, Wieslaw Krolikowski, Yan Sheng^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

91 Citations (Scopus)

Abstract

We demonstrate infrared femtosecond laser-induced inversion of ferroelectric domains. This process can be realised solely by using tightly focused laser pulses without application of any electric field prior to, in conjunction with, or subsequent to the laser irradiation. As most ferroelectric crystals like LiNbO₃, LiTaO₃, and KTiOPO₄ are transparent in the infrared, this optical poling method allows one to form ferroelectric domain patterns much deeper inside a ferroelectric crystal than by using ultraviolet light and hence can be used to fabricate practical devices. We also propose in situ diagnostics of the ferroelectric domain inversion process by monitoring the Aerenkov second harmonic signal, which is sensitive to the appearance of ferroelectric domain walls.

Original language	English
Article number	141102
Journal	Applied Physics Letters
Volume	107
Issue number	14
DOIs	https://doi.org/10.1063/1.4932199
Publication status	Published - 5 Oct 2015

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abstract = "We demonstrate infrared femtosecond laser-induced inversion of ferroelectric domains. This process can be realised solely by using tightly focused laser pulses without application of any electric field prior to, in conjunction with, or subsequent to the laser irradiation. As most ferroelectric crystals like LiNbO3, LiTaO3, and KTiOPO4 are transparent in the infrared, this optical poling method allows one to form ferroelectric domain patterns much deeper inside a ferroelectric crystal than by using ultraviolet light and hence can be used to fabricate practical devices. We also propose in situ diagnostics of the ferroelectric domain inversion process by monitoring the Aerenkov second harmonic signal, which is sensitive to the appearance of ferroelectric domain walls.",

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AU - Chen, Xin

AU - Karpinski, Pawel

AU - Shvedov, Vladlen

AU - Koynov, Kaloian

AU - Wang, Bingxia

AU - Trull, Jose

AU - Cojocaru, Crina

AU - Krolikowski, Wieslaw

AU - Sheng, Yan

PY - 2015/10/5

Y1 - 2015/10/5

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AB - We demonstrate infrared femtosecond laser-induced inversion of ferroelectric domains. This process can be realised solely by using tightly focused laser pulses without application of any electric field prior to, in conjunction with, or subsequent to the laser irradiation. As most ferroelectric crystals like LiNbO3, LiTaO3, and KTiOPO4 are transparent in the infrared, this optical poling method allows one to form ferroelectric domain patterns much deeper inside a ferroelectric crystal than by using ultraviolet light and hence can be used to fabricate practical devices. We also propose in situ diagnostics of the ferroelectric domain inversion process by monitoring the Aerenkov second harmonic signal, which is sensitive to the appearance of ferroelectric domain walls.

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Ferroelectric domain engineering by focused infrared femtosecond pulses

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