Zero-birefringence polymers for optical devices

Akihiro Tagaya, Yasuhiro Koike

研究成果: Conference article査読

2 被引用数 (Scopus)


Optical polymers which exhibit no birefringence with any orientation of polymer chains are desirable to realize high performance optical devices that handle polarized light. We defined such polymers as "zero-birefringence polymer" and demonstrated two methods for synthesizing the zero-birefringence polymers: the random copolymerization method and the anisotropic molecule dopant method. Orientational birefringence is compensated by random copolymerization using a positive and a negative birefringence monomers at specified ratio in the random copolymerization method. Poly(methyl methacrylate-co-benzyl mehtaylate) (methyl methacrylate / benzyl methacrylate = 82/18 (wt./wt.)) synthesized by this method showed no orientational birefringence with any orientation degree. In the anisotropic molecule dopant method, orientational birefringence of polymers is compensated by doping anisotropic molecules having opposite anisotropy of polarizability compared to host polymers. Orientational birefringence of poly(methyl methacrylate) was completely compensated by doping with 3 wt% of trans-stilbene as the anisotropic molecule. Furthermore, we demonstrated the isotropic particle dopant method to reduce orientational birefringence of polymers. Orientational birefringence for polymethyl methacrylate film was decreased by approximately 20 % by doping with 2 wt% of silica particles with an average diameter of 7 nm as the isotropic particle dopant.

ジャーナルProceedings of SPIE - The International Society for Optical Engineering
出版ステータスPublished - 2001 12月 1
イベントDesign, Fabrication, and Characterization of Photonic Devices II - Singapore, Singapore
継続期間: 2001 11月 272001 11月 30

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学
  • コンピュータ サイエンスの応用
  • 応用数学
  • 電子工学および電気工学


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