Scattering polarizer with anisotropic crystals in a polyolefin polymer

Okumura, Takamitsu; Ishikawa, Takeshi; Koike, Yasuhiro; Tagaya, Akihiro
January 2003
Applied Physics Letters;1/27/2003, Vol. 82 Issue 4, p496
Academic Journal
A scattering polarizer containing calcium carbonate whiskers (aragonite) in a polyolefin polymer has been developed. A selective multiple scattering technique, generating transmitted linearly polarized light and backward scattered light, has been demonstrated. A refractive index match and mismatch arises from the uniaxial orientation of the host polymer and the alignment of aragonite in the drawing direction. The dependence of the transmittance on the polarization direction of the incident light has been observed. The polarizing efficiency has been measured to be 60% with a 150-µm thickness.


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