2010
DOI: 10.1364/ol.35.001224
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Measurement of the refractive index of highly turbid media

Abstract: We demonstrate a first simultaneous measurement of the real and imaginary parts of the refractive index of a highly turbid medium by observing the real-time reflectance profile of a divergent laser beam made incident on the surface of the turbid medium. We find that the reflectance data are well described by Fresnel theory that correctly includes the effect on total internal reflection of angle-dependent penetration into the turbid medium.

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Cited by 48 publications
(54 citation statements)
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“…All of these error estimations should be discussed quantitatively in the future. When the gases and aerosol particles in the atmosphere are considered as a whole, the AERI n eff can be written as follows (van de Hulst, 1957;Barrera et al, 2007;Calhoun et al, 2010):…”
Section: Conclusion and Discussionmentioning
confidence: 99%
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“…All of these error estimations should be discussed quantitatively in the future. When the gases and aerosol particles in the atmosphere are considered as a whole, the AERI n eff can be written as follows (van de Hulst, 1957;Barrera et al, 2007;Calhoun et al, 2010):…”
Section: Conclusion and Discussionmentioning
confidence: 99%
“…The results showed that the imaginary parts of the AERISP were related to the turbulent transport process and the spatial distribution characteristics of aerosols. The atmospheric equivalent refractive index (AERI) depends on scattering and absorption of aerosol particles (Barrera et al, 2007;Calhoun et al, 2010;van de Hulst, 1957), and should be related to the mass concentration of aerosol particles. Therefore, similar to the fact that the temperature structure parameter can reflect the sensible heat flux, the imaginary part of the AERISP may reflect the aerosol mass flux.…”
Section: Introductionmentioning
confidence: 99%
“…It is noteworthy that, despite all the attention, a precise in situ determination of several important optical properties of intralipid emulsions, such as the particle size, refractive index, and attenuation coefficient (which is commonly expressed as the imaginary part of a complex refractive index [13][14][15][16][17][18][19][20][21] ), has continued to elude researchers. 28 The chief difficulty arises from the fact that intralipid emulsions, being highly turbid, have a large attenuation coefficient.…”
Section: Introductionmentioning
confidence: 99%
“…29 Other attempts to extract the complex refractive index by modeling the reflectance data either introduce extraneous fitting parameters (beyond the two parameters of interest, namely, the real and imaginary parts of the refractive index) resulting in overfitting of the data 19,20 or focus on only the critical angle region, which is just a small subset of the reflectance data. [14][15][16][17][18] . Both approaches have built-in arbitrariness causing wide variation in extracted values.…”
Section: Introductionmentioning
confidence: 99%
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