一种基于嵌段共聚物的窄带阻滤波器。

A narrow band-rejection filter based on block copolymers.

作者信息

Yamanaka Takahiko, Hara Shigeo, Hirohata Toru

机构信息

Central Research Laboratory, HAMAMATSU PHOTONICS K.K., 5000, Hirakuchi, Hamakita-ku, Hamamatsu, Shizuoka 434-8601, Japan.

出版信息

Opt Express. 2011 Nov 21;19(24):24583-8. doi: 10.1364/OE.19.024583.

DOI:10.1364/OE.19.024583

PMID:22109487

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.

摘要

我们展示了具有嵌段共聚物（BCP）高度有序微相分离结构的聚合物带阻滤波器（PBRF）的滤波特性。该PBRF的特征在于中心波长处的光密度>5且具有8nm的窄阻带全带宽。此外，通过混合两种不同分子量的BCP可以轻松调节波长。实际上，在拉曼光谱中使用该滤波器能够以足够的分辨率检测到200 cm(-1)的低频拉曼位移。