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  • Barrett, Laura, et al. (author)
  • High-contrast coercive field engineering for periodic poling of RbKTiOPO4 with Ba2+/K+ ion-exchange
  • 2024
  • In: Optics Express. - : Optica Publishing Group. - 1094-4087. ; 32:8, s. 14252-14260
  • Journal article (peer-reviewed)abstract
    • We investigate a new method of coercive field engineering for periodic poling of RbKTiOPO4 (RKTP). By ion exchanging RKTP in a molten salt containing 7 mol% Ba(NO3)2 and 93 mol% KNO3 we achieve more than an order of magnitude difference in polarization switching time between the exchanged and non-exchanged regions. This method is used to fabricate periodic gratings of 2.92 µm in 1 mm thick bulk RKTP for second harmonic generation at 779 nm with a normalized conversion efficiency of 2%/Wcm. We show that the poled domain structures are stable at 300 °C, and that there is no bulk refractive index modification associated with the periodic ion exchange.
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Type of publication
journal article (1)
Type of content
peer-reviewed (1)
Author/Editor
Zukauskas, Andrius (1)
Barrett, Laura (1)
Lee, Cherrie, 1992- (1)
Laurell, Fredrik, pr ... (1)
Canalias, Carlota (1)
University
Royal Institute of Technology (1)
Language
English (1)
Research subject (UKÄ/SCB)
Natural sciences (1)
Year
2024 (1)

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