Method for measuring the mean time of flight spent by photons inside a volume element of a highly diffusing medium

被引：17

作者：

Zaccanti, G

Alianelli, L

Blumetti, C

Carraresi, S

机构：

[1] Univ Florence, Dipartimento Fis, I-50139 Florence, Italy

[2] Ist Nazl Fis Mat, I-50139 Florence, Italy

来源：

OPTICS LETTERS | 1999年 / 24卷 / 18期

关键词：

D O I：

10.1364/OL.24.001290

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A method of measuring the mean time of flight, [ti], spent by photons inside a generic volume element of a highly diffusing medium is presented. The method comes from a general property of the radiative transfer equation and is based on relative measurements of cw attenuation that correspond to small variations of the absorption coefficient inside the volume element. By use of a liquid phantom and small gels with known optical properties it was possible to measure [ti] with good accuracy, even when it was only a few picoseconds long. The results were in good agreement with Monte Carlo results. (C) 1999 Optical Society of America. OCIS codes: 170.5280, 170.7050, 170.3660.

引用

页码：1290 / 1292

页数：3

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