| Summary: | 碩士 === 逢甲大學 === 光電學系 === 104 === The thesis proposes a new method for the fabrication of holographic radially polarizers. Based on coupled-wave theory, the diffraction angle is design at a large angle near which facilitates the solving of insufficient problem in effective index of commercial recording materials and ease to achieve polarization selection. Therefore, based on a proposed sandwiched-type recording setup, the radial polarizer can be fabricated with a continue exposure of fan-shape region. The fabricated element was test by a white light source with an operation band of 443.55 nm, and with diffraction efficiencies of s- and p-polarizations of 89.6% and 27.6%, respectively. Finally, the intensity distribution of radially polarized beam was checked with an analyzer at different orientations. The research firstly proposed a new sandwiched-type method for the fabrication of holographic radial polarizers which has considerable potential in relevant applications.
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