Electrooptical effects in glass forming liquids of dipolar nano-clusters embedded in a paraelectric environment

Alexander Gumennik*, Yael Kurzweil-Segev, Aharon J. Agranat

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


Studies of the electrooptic effect in potassium tantalate niobate (KTN) and Li doped KTN in the vicinity of the ferroelectric phase transition are reported. It was observed that in KTN the standard electrooptic behavior is accompanied by electrically induced depolarization of the light traversing through the crystal. This behavior is attributed to the influence of the fluctuating dipolar clusters that are formed in KTN above the ferroelectric phase transition due to the emergence of the Nb ions out of the center of inversion of the unit cell. It was shown in addition that this behavior is inhibited in Li doped KTN, which enables exploiting the large electrooptic effect in these crystals.

Original languageAmerican English
Pages (from-to)332-343
Number of pages12
JournalOptical Materials Express
Issue number3
StatePublished - Jul 2011

Bibliographical note

Funding Information:
This research was supported by the Israel Ministry of Science The “Eshkol Scholarship” of Israel Ministry of Science (grant No. 3-4341), the Israel Science Foundation (grant No. 1519/08), and the Brojde Center for Innovative Engineering and Computer Science.

Publisher Copyright:
© 2011 Optical Society of America. All rights reserved.


  • (160.2100) Electro-optical materials
  • (160.2710) Inhomogeneous optical media
  • (250.4110) Modulators


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