Research on Spectral Characteristics of Yb3+ Doped Double-Cladding Large-Mode-Area Micro-Structured Optical Fiber
LIU Zhuo-qun1, ZHOU Gui-yao1,2*, XIA Chang-ming1, HOU Lan-tian1
1. State Key Laboratory of Metastable Material Fabrication Technology and Science，Yanshan University，Qinhuangdao 066004, China 2. School of Information and Optoelectronic Science and Engineering，South China Normal University，Guangzhou 510006, China
Abstract：Yb3+ doped double-cladding large-mode-area micro-structured optical fibers (Micro-structured fibers, MSF) are the ideal medium for the super high-power optical fiber laser applications. In the present paper, the authors fabricated the Yb3+ doped silica-based glass using the method of non-chemical vapor deposition, and fabricated the Yb3+ doped double-cladding large-mode-area MSF by stack-drawing method using this glass as the core of MSF, according to the design requirements. Fluorescence spectrum of the MSF was obtained using Ti: sapphire femtosecond laser with the wavelength of 975 nm and LD laser with the wavelength of 980 nm as pumping source. The experimental results show that the optical fiber has strong fluorescence at the wavelength of 1 050 nm, and it can inhibit generation of cooperative luminescence effectively.
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