Title page for etd-0706111-125050


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URN etd-0706111-125050
Author Shih-Jen Chang
Author's Email Address w5804@hotmail.com
Statistics This thesis had been viewed 5594 times. Download 1103 times.
Department Electro-Optical Engineering
Year 2010
Semester 2
Degree Master
Type of Document
Language zh-TW.Big5 Chinese
Title Study of Holographic Recording in Diacrylate Mesogens Using 632.8 nm He-Ne Laser
Date of Defense 2011-06-13
Page Count 70
Keyword
  • holographic
  • He-Ne laser
  • polymerization
  • polymer liquid crystal
  • diacrylate
  • Abstract    He-Ne Laser induced polymerization in diacrylate mesogens RM257 had been verified in previous studies. Holography patterns can also be recorded in RM257 using He-Ne Laser. Higher diffraction efficiency was obtained by controlling temperature of the mesogen.
       In the present study, we consider the diacrylate compound RM82 that is main chain polymeric liquid crystal with different length of chain. We focus on two objectives in this study: (i) to investigate polymerization and absorbance of RM82 thin film that was exposed to He-Ne laser with the temperature of sample control, the initial power intensity of laser beam and the exposed time. (ii)Using the result of part (i), the possibility of the use of RM82 thin film for recording holographic patterns produced using a laser beam emitted from a 12mW He-Ne laser operated at 633 nm wavelength is studied.
      The periodic structures and orientated diacrylate polymer networks are produced in the polymer film by holographic field produced using He-Ne laser. The region of light stripes was aligned perpendicular to the gratings, whereas the region of dark stripes was disorder.
    Advisory Committee
  • Tsung-Hsien Lin - chair
  • Mei-Ying Chang - co-chair
  • Wei Lee - co-chair
  • Wenjun Zheng - advisor
  • Files
  • etd-0706111-125050.pdf
  • indicate access worldwide
    Date of Submission 2011-07-06

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