The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 21, 2020
Filed:
Dec. 30, 2015
Xinjiang Technical Institute of Physics & Chemistry, Chinese Academy of Sciences, Urumqi, CN;
Abstract
An oxychloride infrared nonlinear optical crystal and the preparation method and use thereof, the optical crystal has a general chemical formula of PbOCl, therein 0<x<0.139 or 0.141<x<0.159 or 0.161<x≤0.6. The crystal is non-centrosymmetric, belongs to orthonormal system with space group of Fmm2, cell parameter is a=35.4963(14)±0.05 Å, b=5.8320(2)±0.05 Å, c=16.0912(6)±0.05 Å. The crystal is prepared by high temperature melt method or flux method. The crystal has a strong second harmonic generation efficiency of 4 times that of KDP (KHPO) tested by Kurtz method, it is phase machable, transparent in the range of 0.34-7 μm. The laser damage threshold is 10 times that of the current commercial infrared nonlinear optical crystal AgGaS. No crystalline water exists in lead oxychloride, and it is stable in the air and has good thermal stability.