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《Laser & Infrared》 2016-10
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Application research on multifunction fiber end laser broadband antireflection film

LI Mei-xuan;WANG Li;WANG Mei-jiao;LENG Yan-bing;DONG Lian-he;Changchun University of Science and Technology;College of Optical and Electronical Information,Changchun University of Science and Technology;  
A novel near-infrared fiber broadband laser antireflection film within 800 ~ 1300 nm band is designed,and it can apply to multi-band high-power semiconductor lasers and has high damage threshold. By selecting a suitable optical material,simulating with TFCalc software,adjusting the optimal process parameters,and using thermal evaporation vacuum coating instrument and RF ion source assisted deposition method,the problems of end face cleaning of small-diameter fibers and coating adhere strength of low temperature coating are solved. The sample spectra after coating are analyzed by Agilent CARY6000 i optical measurement system. The results show that the average transmission of this antireflection film is 99. 2% within the range of 800 ~ 1300 nm. Taking single tube 808 nm,980 nm and 1064 nm semiconductor lasers as the light source respectively,the output power of multimode fiber after coating has improved significantly. This film can effectively improve the coupling efficiency of high-power semiconductor laser and optical fiber,and has good application values.
【Fund】: 国家自然科学基金合作项目(No.11474037)资助
【CateGory Index】: TN253;TN248.4
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