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《Acta Photonica Sinica》 2011-11
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Design of High-brightness Fiber-coupled Diode Laser System Based on Astigmatism and Ideal Imaging Theories

OU Xiang1,XIONG Ling-ling2,ZHANG Pu2,DING Xiao-chen1,JIA Shu-hai1,LIU Xing-sheng2,3(1 School of Science,Xi′an Jiaotong University,Xi′an 710049,China)(2 State Key Laboratory of Transient Optics & Photonics,Xi′an Institute of Optics & Precision Mechanics, Chinese Academy of Sciences,Xi′an 710119,China)(3 Xi′an Focuslight Technology Co.,Ltd.,Xi′an 710119,China)  
A high-brightness fiber-coupled diode laser system is designed,based on the principle of astigmatism and ideal light source imaging theory.As an example,details of the calculation methods and design steps of the fiber coupled laser diode are given whose wavelength is 808 nm and output power is 10 W.Semiconductor laser beam can be coupled into the 50 μm core diameter optical fiber with a numerical aperture of 0.22.It is found that this fiber-coupled system has an output power of 9.712 W,a coupling efficiency of 97.12% and a power density of 1.1224×106 W/cm2.The proposed method is simple in principle,and the designed fiber-coupled system has high coupling efficiency,small size and strong practical value.
【Fund】: 中科院重大知识创新项目(No.Y024H91213)资助
【CateGory Index】: TN248.4
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