title: A promising nonlinear optical material in the Mid-IR region: new results on synthesis, crystal structure and properties of noncentrosymmetric β-HgBrCl.
abstract: This paper reports, for the first time, the nonlinear optical property of β-HgBrCl, which was synthesized by a reaction of Hg2Cl2 and Br2 in EtOH. This reaction also gave α-HgBrCl. And the single crystal structures of both α- and β-HgBrCl are presented and compared. β-HgBrCl shows phase-matchable powder second harmonic generation (SHG) effect of about 2 times that of KH2PO4 (KDP). Its absorption edge in UV-vis spectrum locates at 366 nm, implying a wide band gap and therefore higher laser damage threshold. It also exhibits a relatively wide transparent window (from 0.4 to 20 μm) and relatively good thermal stability.
authors.affiliation: Department of Chemistry, Wuhan University, Wuhan, 430072, PR China.
authors.forename: Yangyang
authors.initials: Y
authors.lastname: Dang
authors.forename: Xianggao
authors.initials: X
authors.lastname: Meng
authors.forename: Kui
authors.initials: K
authors.lastname: Jiang
authors.forename: Cheng
authors.initials: C
authors.lastname: Zhong
authors.forename: Xingguo
authors.initials: X
authors.lastname: Chen
authors.forename: Jingui
authors.initials: J
authors.lastname: Qin
mesh_terms: D001965:Bromides / Q000737:chemistry*; D002712:Chlorides / Q000737:chemistry*; D018360:Crystallography, X-Ray; D008628:Mercury / Q000737:chemistry*; D008958:Models, Molecular; D015394:Molecular Structure; D055620:Optical Phenomena; D033362:Powder Diffraction; D013056:Spectrophotometry, Ultraviolet; D017550:Spectroscopy, Fourier Transform Infrared; D019265:Spectroscopy, Near-Infrared
chemical_list: D001965:Bromides; D002712:Chlorides; D008628:Mercury