ABSORBENCY MEASUREMENTS IN TURBID MEDIA BY THE PHOTON-CORRELATION METHOD

被引：7

作者：

KATAYAMA, K ^{[1
]}

NISHIMURA, G ^{[1
]}

KINJO, M ^{[1
]}

TAMURA, M ^{[1
]}

机构：

[1] KIRIN TECHNOSYST CORP,TSURUMI KU,YOKOHAMA 230,JAPAN

来源：

APPLIED OPTICS | 1995年 / 34卷 / 31期

关键词：

SCATTERING; TURBID MEDIA; ABSORPTION MEASUREMENT; PHOTON CORRELATION METHOD; DIFFUSING-WAVE SPECTROSCOPY;

D O I：

10.1364/AO.34.007419

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Optical absorption in highly turbid media was quantified by the time shift of the electric field autocorrelation function of diffused photons. The intensity autocorrelation function was analyzed by the third-order cumulant expansion and a linear relationship between the time shift and the absorber concentration was observed. The slope of the fitted line gave the molecular extinction coefficient of the absorber. The absorption spectra were also obtained from the time shift. Applicability to dual-wavelength absorption measurement is also discussed. We demonstrate for the first time, as far as we know, the feasibility of absorbance quantification in turbid media by the photon correlation method. (C) 1995 Optical Society of America

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收藏

页码：7419 / 7427

页数：9

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