Affiliation:
1. Key Laboratory of Photoelectric Materials and Devices of Zhejiang Province
2. Engineering Research Center for Advanced Infrared Photoelectric Materials and Devices of Zhejiang Province
Abstract
Fiber side-pump couplers can enhance the output power of fiber laser due to their dependable and efficient operation and impressive power handling capability. We developed a tellurite fiber side-pump coupler by twisting and fusing a tapered pump fiber onto a target fiber. The effect of twisting parameters on coupling efficiency was comprehensively investigated through theoretical simulations and experiments. Experimental results exhibited an impressive coupling efficiency of 76.5% and a root mean square stability of 0.086% and 0.091% before and after one month, respectively, driven by an incident pump power of up to 4.2 W.
Funder
Natural Science Foundation of Zhejiang Province
Key R&D Program of Ningbo City
National Natural Science Foundation of China
K. C. Wong Magna Fund in Ningbo University