Waveguide capillary cell for low-refractive-index liquids

被引:36
作者
Altkorn, R
Koev, I
Gottlieb, A
机构
[1] BIOGEN INC, SAN DIEGO, CA 92121 USA
[2] RANDOM TECHNOL, SAN FRANCISCO, CA 94107 USA
关键词
waveguide capillary cell; liquid-core optical fiber; visible spectroscopy;
D O I
10.1366/0003702971939109
中图分类号
TH7 [仪器、仪表];
学科分类号
0804 ; 080401 ; 081102 ;
摘要
We describe a waveguide capillary cell based on a fused-silica tube coated externally with a thin layer of a low-refractive-index (n = 1.31) fluoropolymer. When filled with a transparent liquid of refractive index greater than that of the fluoropolymer, the cell is capable of transmitting light through total internal reflection. Loss below 1 dB/m is demonstrated throughout much of the visible region for a 530-mu m-i.d., 660-mu m-o.d. cell filled with water.
引用
收藏
页码:1554 / 1558
页数:5
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