标题:Phase-stepped-changing Terahertz zone plate
作者:Ju, Zhipeng ;Li, Dehua ;Zhou, Wei ;Ma, Jianjun ;Li, Qiankun ;Qu, Cao
作者机构:[Ju, Zhipeng ;Li, Dehua ;Zhou, Wei ;Ma, Jianjun ;Li, Qiankun ;Qu, Cao ] Terahertz Science and Technology Research Center, Shandong University of Scien 更多
通讯作者:Ju, Z
来源:Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering
出版年:2013
卷:42
期:6
页码:1519-1522
摘要:Diffraction efficiency investigation of zone plate with stepped phase for terahertz frequencies was presented in this paper. According to Rayleigh-Sommerfeld diffraction theory, the zone plate with phase stepped changing can focus Gaussian beam with high diffraction efficiency. Diffraction law of the phase-stepped-changing zone plate was similar to thin lens. Simulations of intensity distribution and diffraction efficiency in phase-stepped-changing, phase-continuous-changing and phase-correcting Fresnel zone plate were conducted and compared. Results show that the focusing performance and the diffraction efficiency of phase-stepped-changing zone plate is better. A phase-stepped-changing zone plate is calculated. It can be produced by micro-mechanical method.
收录类别:EI
资源类型:期刊论文
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