Disordered, Strongly Scattering Porous Materials as Miniature Multipass Gas Cells

被引：66
作者：
Svensson, Tomas [2 ]
Adolfsson, Erik [1 ]
Lewander, Marta [2 ]
Xu, Can T. [2 ]
Svanberg, Sune [2 ]
机构：
[1] SWEREA IVF, SE-43122 Molndal, Sweden
[2] Lund Univ, Dept Phys, SE-22100 Lund, Sweden
来源：
PHYSICAL REVIEW LETTERS | 2011年 / 107卷 / 14期
基金：
瑞典研究理事会;
关键词：
SPECTROSCOPY; ABSORPTION; LIGHT; DIFFUSION; SOLIDS; MEDIA; PHYSICS; PATHS;
D O I：
10.1103/PhysRevLett.107.143901
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We investigate the interaction of light and gas in strongly scattering nano- and macroporous media. Manufacturing and structural characterization of ZrO2, Al2O3 and TiO2 ceramics with different pore sizes, measurements of optical properties using photon time-of-flight spectroscopy, and high-resolution laser spectroscopy of O-2 at 760 nm are reported. We show that extreme light scattering can be utilized to realize miniature spectroscopic gas cells. Path length enhancement factors up to 750 are reached (5.4 m path through gas for light transmitted through a 7 mm ZrO2 with 49% porosity and 115 nm pores).
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页数：4
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