Chinese Optics Letters, Vol. 5, Issue 5, 255 (2007)
Optically inscribed surface-relief zone plates in azo polymer films
Jun Yang1,2,*, Bin Guo1,2, Douguo Zhang3, Pei Wang3, and Hai Ming2
- 1Academe of Optoelectronic Technology, Hefei University of Technology, Hefei 230009
- 2Department of Physics, University of Science and Technology of China, Hefei 230026
- 3College of Information Science and Technology, Nanjing Forestry University, Nanjing 210037
We describe a simple and cost-effective holographic method for the fabrication of surface-relief zone plates. The zone plate is inscribed by interference between the first- and second-order diffracted waves from an ion-etched Fresnel zone plate. The inscribed surface-relief zone plates are observed by atomic force microscope (AFM). The formation process of the surface grating and the mass diffusion in azo polymer are analyzed.