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Open AccessArticle
The Creation of a Domain Structure Using Ultrashort Pulse NIR Laser Irradiation in the Bulk of MgO-Doped Lithium Tantalate
by
Boris Lisjikh
Boris Lisjikh ,
Mikhail Kosobokov
Mikhail Kosobokov and
Vladimir Shur
Vladimir Shur *
School of Natural Sciences and Mathematics, Ural Federal University, Ekaterinburg 620062, Russia
*
Author to whom correspondence should be addressed.
Photonics 2024, 11(10), 928; https://doi.org/10.3390/photonics11100928 (registering DOI)
Submission received: 23 August 2024
/
Revised: 20 September 2024
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Accepted: 25 September 2024
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Published: 30 September 2024
Abstract
The fabrication of stable, tailored domain patterns in ferroelectric crystals has wide applications in optical and electronic industries. All-optical ferroelectric poling by pulse laser irradiation has been developed recently. In this work, we studied the creation of the domain structures in MgO-doped lithium tantalate by focused irradiation with a femtosecond near-infrared laser. Cherenkov-type second harmonic generation microscopy was used for domain imaging of the bulk. We have revealed the creation of enveloped domains around the induced microtracks under the action of the depolarization field. The domain growth is due to a pyroelectric field caused by a nonuniform temperature change. The domains in the bulk were revealed to have a three-ray star-shaped cross-section. It was shown that an increase in the field excess above the threshold leads to consequential changes in domain shape from a three-ray star to a triangular and a circular shape. The appearance of comb-like domains as a result of linear scanning was demonstrated. All effects were considered in terms of a kinetic approach, taking into account the domain wall motion by step generation and kink motion driven by excess of the local field over the threshold. The obtained knowledge is useful for the all-optical methods of domain engineering in ferroelectrics.
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MDPI and ACS Style
Lisjikh, B.; Kosobokov, M.; Shur, V.
The Creation of a Domain Structure Using Ultrashort Pulse NIR Laser Irradiation in the Bulk of MgO-Doped Lithium Tantalate. Photonics 2024, 11, 928.
https://doi.org/10.3390/photonics11100928
AMA Style
Lisjikh B, Kosobokov M, Shur V.
The Creation of a Domain Structure Using Ultrashort Pulse NIR Laser Irradiation in the Bulk of MgO-Doped Lithium Tantalate. Photonics. 2024; 11(10):928.
https://doi.org/10.3390/photonics11100928
Chicago/Turabian Style
Lisjikh, Boris, Mikhail Kosobokov, and Vladimir Shur.
2024. "The Creation of a Domain Structure Using Ultrashort Pulse NIR Laser Irradiation in the Bulk of MgO-Doped Lithium Tantalate" Photonics 11, no. 10: 928.
https://doi.org/10.3390/photonics11100928
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