Thermal distribution analysis of multi-core photonic crystal fiber laser  

作　　者：郑一博 姚建铨 张磊 王远 温午麒 景磊 邸志刚 康建诩 

机构地区：[1]Key Laboratory of Optoelectronics Information and Technical Science,Ministry of Education,Institute of Laser&Optoelectronics,College of Precision Instruments and Optoelectronic Engineering,Tianjin University [2]Hebei Key Laboratory of Optoelectronic Information and Geo-detection Technology,Shijiazhuang University of Economics [3]College of Information,Hebei United University

出　　处：《Optoelectronics Letters》2012年第1期13-16,共4页光电子快报（英文版）

基　　金：supported by the National Basic Research Program of China(No.2010CB327801);the Key Program of National Natural Science Foundation of China(No.60637010);the Natural Science Research Project in University of Hebei Province(No.Z2010163)

摘　　要：The thermal properties of photonic crystal fiber(PCF) laser with 18 circularly distributed cores are investigated by using full-vector finite element method(FEM).The results show that the 18-core PCF has a more effective thermal dispersion construction compared with the single core PCF and 19-core PCF.In addition,the temperature distribution of 18-core PCF laser with different thermal loads is simulated.The results show that the core temperature approaches the fiber drawing value of 1800 K approximately when the thermal load is above 80 W/m which corresponds to the pumping power of 600 W approximately,while the coating temperature approaches the damage value of about 550 K when the thermal load is above 15 W/m which corresponds to the pumping power of 110 W approximately.Therefore the fiber cooling is necessary to achieve power scaling.Compared with other different cooling systems,the copper cooling scheme is found to be an effective method to reduce the thermal effects.

关 键 词：Cooling systems Fiber lasers Finite element method Photonic crystal fibers Thermal load Thermodynamic properties 

分 类 号：TN248[电子电信—物理电子学]