Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9785761 | Optics Communications | 2005 | 7 Pages |
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
Authors
Kaladevi Sendhil, C. Vijayan, M.P. Kothiyal,