Abstract
Quantifying light transport in turbid media is a longstanding challenge. This challenge arises from the difficulty in experimentally separating unscattered, ballistic light from forward scattered light. Correlation gating is a new approach that numerically separates light paths based on statistical dynamics of the optical field. Here we apply correlation gating with interferometric near-infrared spectroscopy (iNIRS) to separate and independently quantify ballistic and scattered light transmitted through thick samples. First, we present evidence that correlation gating improves the isolation of ballistic light in a thick, intrinsically dynamic medium with Brownian motion. Then, from a single set of iNIRS transmission measurements, we determine the ballistic attenuation coefficient and group refractive index from the time-of-flight (TOF) resolved static intensity, and we determine the reduced scattering and absorption coefficients from the diffusive part of the TOF resolved dynamic intensity. Finally, we show that correlation gating is applicable in intrinsically static media in which motion is induced externally. Thus, for the first time, to the best of our knowledge, the key optical properties of a turbid medium can be derived from a single set of transmission measurements.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 5881-5884 |
| Number of pages | 4 |
| Journal | Optics Letters |
| Volume | 43 |
| Issue number | 23 |
| DOIs | |
| State | Published - Dec 1 2018 |
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ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
Cite this
Correlation gating quantifies the optical properties of dynamic media in transmission. / Borycki, Dawid; Kholiqov, Oybek; Srinivasan, Vivek.
In: Optics Letters, Vol. 43, No. 23, 01.12.2018, p. 5881-5884.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Correlation gating quantifies the optical properties of dynamic media in transmission
AU - Borycki, Dawid
AU - Kholiqov, Oybek
AU - Srinivasan, Vivek
PY - 2018/12/1
Y1 - 2018/12/1
N2 - Quantifying light transport in turbid media is a longstanding challenge. This challenge arises from the difficulty in experimentally separating unscattered, ballistic light from forward scattered light. Correlation gating is a new approach that numerically separates light paths based on statistical dynamics of the optical field. Here we apply correlation gating with interferometric near-infrared spectroscopy (iNIRS) to separate and independently quantify ballistic and scattered light transmitted through thick samples. First, we present evidence that correlation gating improves the isolation of ballistic light in a thick, intrinsically dynamic medium with Brownian motion. Then, from a single set of iNIRS transmission measurements, we determine the ballistic attenuation coefficient and group refractive index from the time-of-flight (TOF) resolved static intensity, and we determine the reduced scattering and absorption coefficients from the diffusive part of the TOF resolved dynamic intensity. Finally, we show that correlation gating is applicable in intrinsically static media in which motion is induced externally. Thus, for the first time, to the best of our knowledge, the key optical properties of a turbid medium can be derived from a single set of transmission measurements.
AB - Quantifying light transport in turbid media is a longstanding challenge. This challenge arises from the difficulty in experimentally separating unscattered, ballistic light from forward scattered light. Correlation gating is a new approach that numerically separates light paths based on statistical dynamics of the optical field. Here we apply correlation gating with interferometric near-infrared spectroscopy (iNIRS) to separate and independently quantify ballistic and scattered light transmitted through thick samples. First, we present evidence that correlation gating improves the isolation of ballistic light in a thick, intrinsically dynamic medium with Brownian motion. Then, from a single set of iNIRS transmission measurements, we determine the ballistic attenuation coefficient and group refractive index from the time-of-flight (TOF) resolved static intensity, and we determine the reduced scattering and absorption coefficients from the diffusive part of the TOF resolved dynamic intensity. Finally, we show that correlation gating is applicable in intrinsically static media in which motion is induced externally. Thus, for the first time, to the best of our knowledge, the key optical properties of a turbid medium can be derived from a single set of transmission measurements.
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U2 - 10.1364/OL.43.005881
DO - 10.1364/OL.43.005881
M3 - Article
C2 - 30499965
AN - SCOPUS:85057457377
VL - 43
SP - 5881
EP - 5884
JO - Optics Letters
JF - Optics Letters
SN - 0146-9592
IS - 23
ER -