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个人信息Personal Information
教授
博士生导师
硕士生导师
性别:男
毕业院校:北京航空航天大学
学位:博士
所在单位:机械工程学院
学科:机械电子工程. 微机电工程. 测试计量技术及仪器
办公地点:机械大方楼6019
联系方式:0411-84706108
电子邮箱:chujk@dlut.edu.cn
Near-infrared bilayer nanowire grid polarizer array fabricated using soft nanoimprint lithography
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论文类型:期刊论文
发表时间:2019-05-01
发表刊物:OPTICAL ENGINEERING
收录刊物:EI、SCIE
卷号:58
期号:5
ISSN号:0091-3286
关键字:near-infrared; nanowire grid polarizer array; soft nanoimprint lithography
摘要:We fabricated a cost-effective and tractable near-infrared nanowire grid polarizer array with six different directional grating elements on a Borofloat 33 glass substrate at once using a soft nanoimprint and metal thermal evaporation process. Each element consists of a 200-nm period bilayer Al grating with an area of 1.3 x 1.3 mm(2). Scanning electron microscopy images reveal that each unit of the polarizer array has an intact nanostructure without large-area damage. Meanwhile, the TM transmittance of each element exceeds 65% in the wavelength range of 1 to 2.5 pm, and of particular note, it is >70% in the wavelength range of 1.2 to 2.5 mu m. The extinction ratio is more than 20 dB in 1.38- to 2.5 mu m wavelength range, proving that the polarizer array has good polarization characteristics. Such a polarizer array has low costs and better compatibility with microfabrication processes, which can be used as an element of near-infrared polarization image detection equipment. (C) 2019 Society of Photo-Optical Instrumentation Engineers (SPIE).