Investigation and modeling of UV band-passfiltering white compound materials for potting or embedding in micro-optical applications

Junfeng Zhu, Keisuke Nakakubo, Yuya Mikami, Hiroaki Yoshioka, Kinichi Morita, Yuji Oki

研究成果: ジャーナルへの寄稿学術誌査読

6 被引用数 (Scopus)

抄録

A novel white compound material with spectral band pass filtering was proposed and demonstrated in the UV region for wavelengths smaller than 310 nm. This compound material can be obtained by dispersing CaF 2 in polydimethylsiloxane (PDMS). Refractive index matching (RIM) of the compound material resulted in transmittance of up to 80% at RIM wavelength. In no-RIM wavelength region, refractive index difference about 0.005 could result in transmittance of down to 30% due to intense Rayleigh isotropic scattering. A good reproducibility of the transparent wavelength can be obtained with the specific CaF 2 particle and PDMS matrix in this study. Meanwhile, simple calculation based on Rayleigh- Gans-Debye approximation [J. Am. Ceram. Soc. 86(3), 480-486 (2003)] in the soft diffusion model can explain the CaF 2 : PDMS compound film transmittance spectrum in the UV region, and the bandwidth narrowing condition.

本文言語英語
ページ(範囲)1002-1014
ページ数13
ジャーナルOptical Materials Express
9
3
DOI
出版ステータス出版済み - 3月 1 2019

!!!All Science Journal Classification (ASJC) codes

  • 電子材料、光学材料、および磁性材料

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