Fourier spectrum analysis of spiral zone plates

作者：Sharma Manoj Kumar^*; Singh Ram Kishor; Joseph Joby; Senthilkumaran P

来源：Optics Communications, 2013, 304: 43-48.

DOI：10.1016/j.optcom.2013.04.028

• Fourier spectrum
• Spiral zone plate
• Edge enhancement
• Transfer function
• Radial Hilbert filter

In this paper we study spiral zone plates with amplitude, phase and binary amplitude transmittances. Fourier transforms of these transmittance functions which are useful in derivations involving propagation, imaging and spatial filtering are derived. Using these Fourier transforms, the spatial filtering properties of these zone plates are presented and compared with a pure radial Hilbert mask.

• 出版日期2013-9-1