A Novel Nonlinear Optical Crystal for the IR Region: Noncentrosymmetrically Crystalline CsCdBr3 and Its Properties
- 12 December 2002
- journal article
- research article
- Published by American Chemical Society (ACS) in Inorganic Chemistry
- Vol. 42 (1), 8-10
- https://doi.org/10.1021/ic025813y
Abstract
A noncentrosymmetric crystal structure of CsCdBr(3) has been successfully observed with X-ray single-crystal structure analysis. It crystallizes in the hexagonal space group P6(3)mc, with a = 7.7281(14) A, b = 7.7281(14) A, c = 6.742(2) A, alpha = 90 degrees, beta = 90 degrees, gamma = 120 degrees, Z = 2. It was obtained by a new preparation procedure different from that reported in the literature that gave a centrosymmetric structure. The structure contains Cd-Br octahedrons, which are connected in a plane-sharing way to form one-dimensional long chains. Each octahedron is slightly distorted, as the three Cd-Br bond lengths are 2.774 A, while the other three Cd-Br bond lengths are 2.804 A. The distortion directions of all of the octahedrons are almost parallel and give rise to the accumulation of the microcosmic nonlinear optical (NLO) coefficient. The Kurtz powder technique shows that CsCdBr(3) has a powder second harmonic generation of about 2 times as large as that of potassium dihydrogen phosphate (KDP). It shows excellent transparency in the visible and infrared regions. The thermal stability is also good. Therefore it may be utilized as a potential nonlinear optical crystal for the IR region.Keywords
This publication has 8 references indexed in Scilit:
- Study on a new IR nonlinear optics crystal CsGeCl3Journal of Crystal Growth, 2000
- Influence of the molecular configuration on second-order nonlinear optical properties of coordination compoundsCoordination Chemistry Reviews, 1999
- Handbook of Nonlinear Optical CrystalsSpringer Series in Optical Sciences, 1999
- Design, Synthesis, and Properties of Molecule‐Based Assemblies with Large Second‐Order Optical NonlinearitiesAngewandte Chemie-International Edition, 1995
- Organometallic Compounds for Nonlinear Optics—The Search for En‐light‐enment!Angewandte Chemie-International Edition, 1995
- Second-order nonlinearity in poled-polymer systemsChemical Reviews, 1994
- Recent Advances in Nonlinear Optical and Electro-Optical MaterialsAnnual Review of Materials Science, 1986
- About the Crystal Structure of Cesium Cadmium Tribromide and Some Observations on Crystals of Cesium Cadmium Trichloride.Acta Chemica Scandinavica, 1977