Tianjin Key Laboratory of Film Electronic and Communication Devices,School of Electronics Information Engineering,Tianjin University of Technology,Tianjin 300384,China;
2.
Key Laboratory of Optoelectric Information Science and Technology of Ministry of Education,Institute of Laser and Opto-electronics,College of Precision Instrument and Opto-electronics Engineering,Tianjin University,Tianjin 300072,China
The double-end pumped polarizationmaintaining fiber laser was studied by using two semiconductor lasers LD1 and LD2. The output powers of the fiber laser were tested by using LD1 and LD2 single-end pumping and double-end pumping. The output power of double-end pumping was compared with the power sum of LD1 and LD2 single-end pumping, which shows that double-end pumping can enhance the pumping efficiency and output power of the fiber laser. The output power of the double-end pumped fiber laser was 6.5 W, and the output polarization degree was 0.5.