Article ID Journal Published Year Pages File Type
9785761 Optics Communications 2005 7 Pages PDF
Abstract
A robust, self-aligned, polarization independent, pure phase filter was obtained using the intensity dependent refractive index (IDRI) medium, zinc tetraphenyl porphyrin (ZnTPP), a metalloporphyrin. An optical image processor with ZnTPP as the phase filter was designed so that both weak and strong phase objects can be tested with no appreciable design modification. A good phase contrast image with negligible amplitude reduction of the input beam was achieved and the porphyrin as phase filter was found to have several specific advantages over other IDRI media.
Related Topics
Physical Sciences and Engineering Materials Science Electronic, Optical and Magnetic Materials
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