中国物理B ›› 2015, Vol. 24 ›› Issue (2): 24208-024208.doi: 10.1088/1674-1056/24/2/024208
• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇 下一篇
张海涛a, 陈丹b, 郝杰a, 闫平a, 巩马理a
Zhang Hai-Tao (张海涛)a, Chen Dan (陈丹)b, Hao Jie (郝杰)a, Yan Ping (闫平)a, Gong Ma-Li (巩马理)a
摘要: In this paper, a theoretical model to analyze the mode coupling induced by heat, when the fiber amplifier works at high power configuration, is proposed. The model mainly takes into consideration the mode field change due to the thermally induced refractive index change and the coupling between modes. A method to predict the largest average output power of fiber is also proposed according to the mode coupling theory. The largest average output power of a large pitch fiber with a core diameter of 190 μm and an available pulse energy of 100 mJ is predicted to be 540 W, which is the highest in large mode field fibers.
中图分类号: (Lasers)