| 红外空心传能光纤聚焦系统的设计与优化 |
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| 引用本文： | 侯峙云,洪文学,赵兵,韩华.红外空心传能光纤聚焦系统的设计与优化[J].燕山大学学报,2012,36(2):169-172. |
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| 作者姓名： | 侯峙云 洪文学 赵兵 韩华 |
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| 作者单位： | 1. 燕山大学 电气工程学院,河北秦皇岛,066004
2. 燕山大学信息科学与工程学院,河北秦皇岛,066004 |
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| 摘 要： | 为了进一步提高光纤传输激光的效率,通过改善中红外光纤输出激光时的光斑及发散角的大小设计了双透镜和两种三透镜光学聚焦系统,并得到相应的光斑图形.运用MATLAB软件对实测的光斑进行模拟计算,得到了光斑的强度分布图,通过分析计算不同聚焦系统中的不同位置处光斑的大小,计算井得到了光束发散角.实验结果表明,3种方案中凸凹凸三透镜聚焦系统效果最佳,输出的光斑直径为0.33 mm,光束的发散角为042°,提高了耦合效率,降低了传输能量的损耗.
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| 关 键 词： | 聚焦 发散角 模式 |
Design and optimization of focusing system of infrared hollow-core energy-transmitting optical fiber |
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| HOU Zhi-yun
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HONG Wen-xue
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ZHAO Bing
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HAN Hua.Design and optimization of focusing system of infrared hollow-core energy-transmitting optical fiber[J].Journal of Yanshan University,2012,36(2):169-172. |
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| Authors: | HOU Zhi-yun HONG Wen-xue ZHAO Bing HAN Hua |
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| Institution: | 1.College of Electrical Engineering,Yanshan University,Qinhuangdao,Hebei 066004,China;2.College of Information Science and Engineering,Yanshan University,Qinhuangdao,Hebei 066004,China) |
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| Abstract: | In order to further improve the output efficiency of the fiber laser,two optical focusing systems with double-lens and three-lens are designed through the improvement of the infrared fiber output light spot of laser and the size of the divergence angle.The corresponding light spot graphics are obtained.The experimental measurement light spots is simulated and calculated using the MATLAB software,and the intensity distribution of light spot is got.Through the analysis and calculation of the size of the spot of different positions in the different focus system,the beam divergence angle is got.The experimental results show that the focus effect of protruding sunken convex lens in the three scheme is best,whose output light spot diameter is 0.33 mm and light divergence angle of beam is 0.42°.The coupling efficiency is improved,and the energy transmission loss is reduced. |
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| Keywords: | focus divergence angle mode |
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