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:
Jun. 04, 2024
Filed:
Jul. 01, 2020
Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai, CN;
Chongyun Shao, Shanghai, CN;
Lili Hu, Shanghai, CN;
Chunlei Yu, Shanghai, CN;
Meng Wang, Shanghai, CN;
Yan Jiao, Shanghai, CN;
Lei Zhang, Shanghai, CN;
Shikai Wang, Shanghai, CN;
Xiaoqing Xu, Shanghai, CN;
Abstract
A radiation-resistant laser optical fiber preform core rod at least includes one type of activated ion (Yb, Er) and one or more types of co-doped ion (Al, P, Ge, Ce, F), and —OD group of 16-118 ppm. Irradiation resistance of core rod glass can be effectively improved by sequentially performing pre-treatments, i.e. deuterium loading, pre-irradiation and thermal annealing on a preform core rod. Electron paramagnetic resonance test shows that, under the same radiation condition, the radiation induced color center concentration in a preform core rod treated by the method above is lower than in an untreated core rod by one or more orders of magnitude. The obtained core rod can be used for preparing a radiation-resistant rare earth-doped silica fiber, and has the advantages of high laser slope efficiency, low background loss, being able to be used stably in a vacuum environment for a long time, for example.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile