We denote in the following this volume the "diffusive Coherence Volume" (dCV), which presumably is larger laterally than the CV and has an axial extension larger than the coherence length.
In addition, in the raw image as well as in the movie, we saw granular structures corresponding to the speckles appearing as a result of multiple scattering within the probing coherence volume and thus decreasing the image quality.
Cholesteric liquid crystal (CLC) cells with suitable dispersive slope at the edge of 1-D organic photonic band gap have been designed to provide maximum reduction in coherence volume while maintaining the intensity higher than 50%.
At a given depth (z) in the sample, the first term in Eq. (1) is proportional to a coherent sum of all backscattered light from N scatterers in a coherence volume with a size given by the probe beam area and coherence length of the light source.
Firstly, in order to exploit the coherence of volume fields in both the object space and the image space, we propose a general bi-space rendering proxy (BSRP) to represent volume fields.
The collected backscattered light is the summation of the light waves returning from multiple scatterers contained within the probed volume (resolution volume), which is determined by the coherence length of the source and the illumination spot size at that depth.
It should be noted that two measures were recently proposed which are less sensitive to the volume conduction effect than the coherence and the PLI.
We agree that in theory the volume conductance effect and the common generators could impact on the coherence analysis in healthy subjects.
