Diffraction Efficiency Improvement in Holograhic Polymer Dispersed Liquid Crystal (HPDLC) Devices
| Autor: | Koji Mimura, Ken Sumiyoshi |
|---|---|
| Rok vydání: | 2000 |
| Předmět: |
Diffraction
chemistry.chemical_classification Materials science business.industry Analytical chemistry Holography Polymer Condensed Matter Physics Diffraction efficiency Oligomer law.invention chemistry.chemical_compound chemistry Liquid crystal law Laser interference Optoelectronics business Intensity (heat transfer) |
| Zdroj: | Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals. 346:239-244 |
| ISSN: | 1058-725X |
| Popis: | Holographic Polymer Dispersed Liquid Crystals (HPDLC) devices are potentially useful for color reflective type LCDs. In our experiments, HPDLC devices were made from a mixture of LC and light-curable resin containing an oligomer and were formed by laser interference exposure. In order to obtain highly diffracted intensity, we first investigated the dependence of diffraction efficiency in HPDLC devices on laser intensity and the relationship between the phase separation temperature of the mixture and diffraction efficiency. The phase separation temperature of the mixture can be tuned to the oligomer ratio of the light-curable resin. We found that the diffracted intensity increased as laser intensity increased, and also as the phase separation temperature of the mixture increased. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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