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Thermal distribution analysis of multi-core photonic crystal fiber laser

Thermal distribution analysis of multi-core photonic crystal fiber laser
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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. 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 bean effec- tive method to reduce the thermal effects.
出处 《Optoelectronics Letters》 EI 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)
关键词 光子晶体光纤激光器 热分布 多核心 矢量有限元法 核心温度 冷却系统 PCF 热负荷 Cooling systems Fiber lasers Finite element method Photonic crystal fibers Thermal load Thermodynamic properties
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