2022
DOI: 10.3390/cryst12101359
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DC Ionic Conductivity in KTP and Its Isomorphs: Properties, Methods for Suppression, and Its Connection to Gray Tracking

Abstract: We study the DC conductivity in potassium titanyl phosphate (KTiOPO4, KTP) and its isomorphs KTiOAsO4 (KTA) and Rb1%K99%TiOPO4 (RKTP) and introduce a method by which to reduce the overall ionic conductivity in KTP by a potassium nitrate treatment. Furthermore, we create so-called gray tracking in KTP and investigate the ionic conductivity in theses areas. A local unintended reduction of the ionic conductivity is observed in the gray-tracked regions, which also induce additional optical absorption in the materi… Show more

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Cited by 3 publications
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“…Highly efficient single photon sources and optical frequency converters based on nonlinear optical effects are key components for quantum communication. In this regard, the ferroelectric potassium titanyl phosphate (KTiOPO 4 , KTP) and related compounds, such as rubidium titanyl phospate (RbTiOPO 4 , RTP) or potassium titanyl arsenate (KTiOAsO 4 , KTA), are strong candidates for applications due to their inherent large second-order optical nonlinearities, wide transparency windows (320 nm up to 4000 nm) and large damage thresholds [1][2][3][4][5][6]. The unique dispersion properties allow for decorrelated quantum light sources in the telecom band [7].…”
Section: Introductionmentioning
confidence: 99%
“…Highly efficient single photon sources and optical frequency converters based on nonlinear optical effects are key components for quantum communication. In this regard, the ferroelectric potassium titanyl phosphate (KTiOPO 4 , KTP) and related compounds, such as rubidium titanyl phospate (RbTiOPO 4 , RTP) or potassium titanyl arsenate (KTiOAsO 4 , KTA), are strong candidates for applications due to their inherent large second-order optical nonlinearities, wide transparency windows (320 nm up to 4000 nm) and large damage thresholds [1][2][3][4][5][6]. The unique dispersion properties allow for decorrelated quantum light sources in the telecom band [7].…”
Section: Introductionmentioning
confidence: 99%