Enhanced electro-optic effect in potassium lithium tantalate niobate at the paraelectric phase near Tc

Gilad Hirshfeld; Yehuda Vidal; Yehudit Garcia; Galina Perepelitsa; Avi Karsenty; Yossef Kabessa; Aharon J. Agranat

doi:10.1016/j.rinp.2021.104059

Enhanced electro-optic effect in potassium lithium tantalate niobate at the paraelectric phase near T_c

Gilad Hirshfeld, Yehuda Vidal, Yehudit Garcia, Galina Perepelitsa, Avi Karsenty, Yossef Kabessa, Aharon J. Agranat^*

^*Corresponding author for this work

The Institute of Applied Physics

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

7 Scopus citations

Abstract

The electrooptic effect in potassium lithium tantalate niobate (KLTN) at the paraelectric phase in close proximity to T_c was investigated, and was found to be exceptionally large. At T_c+3^°C, the electrically induced change in the refractive index was measured to be ≈0.014 while high optical quality was maintained. It is also shown that at the paraelectric phase, close to T_c, the electrooptic behavior deviates from being directly proportional to the square of the electrically induced polarization P². This is attributed to the influence of dipolar clusters that are formed upon cool-down towards T_c. Taking this influence into account, it was shown that the electrooptic effect close to T_c remains quadratic, enabling the inhibition of photorefractive optical damage by employing a bi-polar driving voltage.

Original language	English
Article number	104059
Journal	Results in Physics
Volume	23
DOIs	https://doi.org/10.1016/j.rinp.2021.104059
State	Published - Apr 2021

Bibliographical note

Publisher Copyright:
© 2021

Keywords

Nano-dipole clusters
Photorefractive optical damage
Potassium lithium tantalate niobate
The electrooptic effect

Access to Document

10.1016/j.rinp.2021.104059

Cite this

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title = "Enhanced electro-optic effect in potassium lithium tantalate niobate at the paraelectric phase near Tc",

abstract = "The electrooptic effect in potassium lithium tantalate niobate (KLTN) at the paraelectric phase in close proximity to Tc was investigated, and was found to be exceptionally large. At Tc+3°C, the electrically induced change in the refractive index was measured to be ≈0.014 while high optical quality was maintained. It is also shown that at the paraelectric phase, close to Tc, the electrooptic behavior deviates from being directly proportional to the square of the electrically induced polarization P2. This is attributed to the influence of dipolar clusters that are formed upon cool-down towards Tc. Taking this influence into account, it was shown that the electrooptic effect close to Tc remains quadratic, enabling the inhibition of photorefractive optical damage by employing a bi-polar driving voltage.",

keywords = "Nano-dipole clusters, Photorefractive optical damage, Potassium lithium tantalate niobate, The electrooptic effect",

author = "Gilad Hirshfeld and Yehuda Vidal and Yehudit Garcia and Galina Perepelitsa and Avi Karsenty and Yossef Kabessa and Agranat, \{Aharon J.\}",

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AU - Hirshfeld, Gilad

AU - Vidal, Yehuda

AU - Garcia, Yehudit

AU - Perepelitsa, Galina

AU - Karsenty, Avi

AU - Kabessa, Yossef

AU - Agranat, Aharon J.

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