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- W3081259552 abstract "Abstract The explosive rise of silicon photonics has led to renewed interest in the electro-optic (EO) or Pockels effect due to its potential uses in many next generation device applications. To find materials with a strong EO response in thin film form, which are essential for low power and small footprint devices, one needs to find a general design rule for strong Pockels materials. To elucidate what makes the Pockels effect strong, we study the effect in LiB 3 O 5 (LBO) and CsB 3 O 5 (CBO) and use these materials as prototypical examples of where conventional wisdom breaks down. We find the Pockels tensor components to be extremely small in both materials, despite the large degree of anharmonicity in the crystals, which has been used as a proxy for the presence of nonlinear electronic effects. We relate the lack of EO response to the large optical phonon frequencies (despite the relatively large Raman susceptibility) in LBO and to the small Raman susceptibility (despite the low phonon frequencies) in CBO, respectively. We shed light on the underlying physical phenomena behind the Raman susceptibility, which we find to be intimately linked to the electron–phonon coupling strength of the near-edge electronic states, and identify a route to discovering new strong EO materials." @default.
- W3081259552 created "2020-09-01" @default.
- W3081259552 creator A5028484117 @default.
- W3081259552 creator A5048939334 @default.
- W3081259552 creator A5077583311 @default.
- W3081259552 creator A5080915325 @default.
- W3081259552 date "2020-08-21" @default.
- W3081259552 modified "2023-10-13" @default.
- W3081259552 title "Design rules for strong electro-optic materials" @default.
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