We design a plano-convex lens working in the terahertz(THz) frequency range and fabricate it using threedimensional(3D) printing technology. A 3D field scanner is used to measure its focal properties, and the resu...We design a plano-convex lens working in the terahertz(THz) frequency range and fabricate it using threedimensional(3D) printing technology. A 3D field scanner is used to measure its focal properties, and the results agree well with the numerical simulations. The refractive index and absorption coefficient measurements via THz time-domain spectroscopy(THz-TDS) reveal that the lens material is highly transparent at THz frequencies. It is expected that this inexpensive and rapid 3D printing technology holds promise for making various THz optical elements.展开更多
基金supported by the Wuhan Applied Basic Research Project under Grant No.20140101010009the National Natural Science Foundation of China under Grant Nos.61177095,61475054,and 61405063+1 种基金the Hubei Natural Science Foundation under Grant No.2013BAA002the Fundamental Research Funds for the Central Universities under Grant Nos.2013KXYQ004,2014ZZGH021,and 2014QN023
文摘We design a plano-convex lens working in the terahertz(THz) frequency range and fabricate it using threedimensional(3D) printing technology. A 3D field scanner is used to measure its focal properties, and the results agree well with the numerical simulations. The refractive index and absorption coefficient measurements via THz time-domain spectroscopy(THz-TDS) reveal that the lens material is highly transparent at THz frequencies. It is expected that this inexpensive and rapid 3D printing technology holds promise for making various THz optical elements.