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:
Sep. 15, 2009
Filed:
Jun. 23, 2005
Rukang LI, Beijing, CN;
Chuangtian Chen, Beijing, CN;
Rukang Li, Beijing, CN;
Chuangtian Chen, Beijing, CN;
Abstract
The present invention provides a cesium-rubidium-borate nonlinear optical crystal, which is represented by the chemical formula CsRbBO(0<x<1), and belongs to the P222space group with the unit cell parameters in the following range: a=8.202-8.514 Å, b=10.075-9.140 Å, c=5.375-6.207 Å and Z=4. A preparation method of the crystal is as follows: a cesium salt, a rubidium salt and a boron-containing compound are mixed pro rata, heated, kept at a temperature, and then cooled down to obtain the cesium-rubidium-borate. The cesium-rubidium-borate and a flux are mixed and heated to form a melt to obtain a mixing melt. Then a seed crystal attached to a seed rod is dipped into the mixing melt and the seed rod is rotated simultaneously. The melt is kept at 620-780° C., and then cooled down slowly at a rate of 0-5° C. per day. The obtained crystal is drawn out of the melt surface and cooled down to room temperature. Thereby, the cesium-rubidium-borate nonlinear optical crystal is obtained. The crystal can be used for laser light wavelength conversion, optical parametric amplification, electrooptic modulation, optical waveguide and etc.