A Narrow Band-Rejection Filter Based on Block Copolymers

Takahiko Yamanaka,Shigeo Hara,Toru Hirohata

Optics express（2011）

Cited 5|Views8

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Abstract

We demonstrate filtering characteristics of a polymer band-rejection filter (PBRF) with highly-ordered microphase-separated structure of block copolymers (BCPs). This PBRF is characterized by an Optical Density > 5 blocking at the center wavelength and narrow blocking full bandwidth of 8 nm. Moreover, the wavelength is easily tuned by blending two BCPs with different molecular-weight. A low frequency Raman shift of 200 cm(-1) are, in fact, detected with a sufficient resolution by using this filter in Raman spectroscopy.

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