Chinese Optics Letters, 2011, 9 (3): 031001, Published Online: Mar. 4, 2011
Image edge-enhancement in optical microscopy with a phase mismatched spiral phase plate Download: 627次
相位失配螺旋相位板 光学边缘增强 径向希尔伯特变换 100.2980 Image enhancement 050.1970 Diffractive optics 050.4865 Optical vortices
Abstract
We present a spiral phase filtering system with a large tolerance for edge enhancement of both phase and amplitude objects in optical microscopy. The method is based on a Fourier 4-f spatial filtering system. A phase mismatched spiral phase plate (SPP) fabricated by electron beam lithography is employed as the radial Hilbert transform for image edge enhancement. Compared with holography, SPP is simple, economical, reliable, and easy to integrate.
Shibiao Wei, Jing Bu, Siwei Zhu, Xiaocong Yuan. Image edge-enhancement in optical microscopy with a phase mismatched spiral phase plate[J]. Chinese Optics Letters, 2011, 9(3): 031001.