학술논문
Lead-Free Perovskite Thin Films with Tailored Pockels-Kerr Effects for Photonics.
Document Type
Academic Journal
Author
Ion V; National Institute for Laser, Plasma and Radiation Physics, 409 Atomistilor, Magurele 077125, Romania.; Teodorescu V; National Institute of Materials Physics, 105 bis Atomistilor, Magurele 077125, Romania.; Birjega R; National Institute for Laser, Plasma and Radiation Physics, 409 Atomistilor, Magurele 077125, Romania.; Dinescu M; National Institute for Laser, Plasma and Radiation Physics, 409 Atomistilor, Magurele 077125, Romania.; Mitterbauer C; Thermo Fisher Scientific, Materials & Structural Analysis, De Schakel 2, Eindhoven 5651 GE, the Netherlands.; Alexandrou I; Thermo Fisher Scientific, Materials & Structural Analysis, De Schakel 2, Eindhoven 5651 GE, the Netherlands.; Ghitiu I; National Institute for Laser, Plasma and Radiation Physics, 409 Atomistilor, Magurele 077125, Romania.; Faculty of Physics, University of Bucharest, Magurele 077125, Romania.; Craciun F; CNR-ISM, Istituto di Struttura della Materia, Area della Ricerca di Roma-Tor Vergata, Via del Fosso del Cavaliere 100, Rome I-00133, Italy.; Scarisoreanu ND; National Institute for Laser, Plasma and Radiation Physics, 409 Atomistilor, Magurele 077125, Romania.
Source
Publisher: American Chemical Society Country of Publication: United States NLM ID: 101504991 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1944-8252 (Electronic) Linking ISSN: 19448244 NLM ISO Abbreviation: ACS Appl Mater Interfaces Subsets: PubMed not MEDLINE; MEDLINE
Subject
Language
English
Abstract
Pockels and Kerr effects are linear and nonlinear electro-optical effects, respectively, used in many applications. The modulation of the refractive index is employed in different photonic circuits. However, the greatest challenge is in photonic elements for quantum computing at room temperature. For this aim, materials with strong Pockels/Kerr effects and χ (2) /χ (3) nonlinear susceptibilities are necessary. Here, we demonstrate composition-modulated strong electro-optical response in epitaxial films of (Ba,Ca)(Ti,Zr)O 3 perovskite titanate. These films are grown by pulsed laser deposition on SrTiO 3 . Depending on the ratios of Ca/Ba and Ti/Zr, films show high Pockels or Kerr optical nonlinearities. We relate the variable electro-optic response to the occurrence of nanopolar domains with different symmetries in a selected composition range. These findings open the route to easily implement nonlinear optical elements in integrated photonic circuits.