Author Affiliations
Abstract
1 中国科学院上海光学精密机械研究所, 上海 201800
2 中国科学院大学, 北京 100049
A new photon sieve with Fibonacci sequence is proposed and a focusing and imaging model of the Fibonacci photon sieve (FiPS) is presented based on the Huygens-Fresnel principle.The results show that the FiPS presents two longitudinal foci with the ratio of golden mean.When the diameters of pinholes are equal to 1.165 times the width of corresponding orbits,the intensity of the two foci is almost the same.Compared with the resolution of Fibonacci zone plate (FiZP),FiPS has higher transverse resolution.Finally,higher transverse resolution on the two focal planes is improved by applying Gaussian apodized technology to the numbers of pinholes of FiPS.In consequence of smaller size,lighter weight,more flexible design and bifocal property,the FiPS can be applied to optical switches,nanometer lithography,bionic eyes,multi-focus imaging and ranging,even some new applications such as ranging from X-ray microscopy and THz imaging.
光学器件 光子筛 衍射积分 斐波那契 高斯切趾技术 optical devices photon sieve diffraction integral Fibonacci Gaussian apodized technology Collection Of theses on high power laser and plasma physics
2015, 13(1): 0923001
1 中国科学院上海光学精密机械研究所, 上海 201800
2 中国科学院大学, 北京 100049
应用斐波那契数列,提出了一种双焦点光子筛,并基于惠更斯-菲涅耳原理,分析了斐波那契光子筛的聚焦特性.数值仿真结果表明,当单色平面波通过斐波那契光子筛时,它能够获得两个焦距比约为黄金分割比的轴向焦点.筛孔直径等于所在轨道宽度的1.165倍时,两个焦点处光强相等.与斐波那契波带片相比,斐波那契光子筛具有更高的横向分辨率.最后引入高斯切趾技术,对斐波那契光子筛筛孔个数进行调制,在两个焦平面上进一步提高横向的分辨率.由于斐波那契光子筛体积小、重量轻、设计灵活,而且具有多焦性,可以用于光学开关、纳米光刻、生物仿生眼、多焦成像和测距,甚至在X 射线显微技术和太赫兹成像技术都将有新的应用.
光学器件 光子筛 衍射积分 斐波那契 高斯切趾技术
