| Summary: | 碩士 === 國立中山大學 === 光電工程學系研究所 === 98 === Many properties of photosensitize material is applied to the holographic recording of the photosensitive materials. The diacrylateis(RM257) is liquid crystalline materials. Beasuse the RM257 with photopolymeriable acrylate endgroups, under the action of light, polymerization of the mesogen with two polymerization groups lesds to crosslinked polymer networks. As the RM257 has a sensitivity to light and good molecular arrangement , it can be applied to optical storage.
In this study, the use of the RM257 thin films as holographic recording materials ; the holography patterns were written using two s-s polarized, mutually coherence He-Ne laser at 633nm light. First, a single beam of He-Ne laser irradiates the RM257, and control exposure time, irradiation intensity, to investigate the RM257 on He-Ne laser (633nm) absorption. Then RM257 thin film exposed to two beams of He-Ne laser induced holographic interferemce fileld. Holography irradiation RM257 thin film arranged molecular singular direction and periodic alignment of molecular, and to fabricate the formation of holographic gratings. The sample temperature is controlled during holography irradiation, can improve RM257 thin film record as holographic interferemce fileld. To investigate holographic fileld induced the molecular of RM257 thin film.
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