环烯烃共聚物太赫兹透镜的设计、制备及特性分析  

Design, fabrication and characteristics of cyclic olefin copolymers lens for terahertz application

作　　者：姬江军[1] 范文慧[1] 孔德鹏[1] 王丽莉[1] 

机构地区：[1]中国科学院西安光学精密机械研究所瞬态光学与光子技术国家重点实验室,陕西西安710119

出　　处：《红外与激光工程》2013年第5期1212-1217,共6页Infrared and Laser Engineering

基　　金：国家自然科学基金(60437020;61108061)

摘　　要：研究了一种新型光学聚合物，环烯烃共聚物在0．1～3THz波段的折射率和透过率特性。借助Solid works软件设计了一款焦距为100m／n、有效孔径为1．75英寸的双凸球面透镜，并设计了制造透镜的模具。通过热压塑成型工艺制造了TopasCOC太赫兹透镜，分析了温度和加热时间对透镜面型的影响。利用Zemax软件模拟分析了透镜在太赫兹波段150μm、300μm和600μm的波长、厚度、曲率半径和折射率对焦距的影响。研究表明：利用该技术制造的TopasCOC透镜面型光滑、精度高、结构无缺陷、性能优良满足系统线性和紧凑的设计要求，在可见光区和太赫兹波段能够发挥准直和聚焦的作用。The refractive index and absorption features of a novel polymer-cyclic olefin copolymers（trade names Topas COC） were studied in 0.1-3 THz band. With SolidWorks software, a common double- convex spherical lens of 100 mm focal length with effective aperture of 1.75 inches was designed, and then a set of mold for manufacturing the lens was designed. By hot compression molding, the Topas COC terahertz lens was fabricated, and the effects of heating temperature and time on the lens surface morphology was analyzed. The effects of the wavelength, thickness, radius of curvature and refractive index on focal length of the lens in the terahertz wavelength of 150 p.m, 300 μm and 600 Ixm was simulated and analyzed by using Zemax software. Studies have shown that the lens made by this method has surface smooth, high accuracy and defect-free structure, so the performance is very superior and meets linear and compact requirements of the terahertz system, and plays the role of collimating and focusing in the visible region and terahertz band.

关 键 词：太赫兹透镜 热压塑成型 Topas环烯烃共聚物 焦距特性 

分 类 号：O439[机械工程—光学工程]