• Corpus ID: 248496611

Coherent enhancement of optical remission in diffusive media

  title={Coherent enhancement of optical remission in diffusive media},
  author={Nicholas Bender and Arthur Goetschy and Chia Wei Hsu and Hasan Yılmaz and Pablo Jara Palacios and Alexey Yamilov and Hui-Min Cao},
velop a theoretical model which predicts the maximal-remission enhancement. Our analysis reveals a significant improvement in the sensitivity of remitted waves, to local changes of absorption deep inside diffusive media. This work illustrates the potential of coherent wavefront control for non-invasive diffuse-wave imaging applications, such as diffuse optical tomography and functional near-infrared spectroscopy. 


Quantitative optical tomography of sub-surface heterogeneities using spatially modulated structured light.
A wide-field method for obtaining three-dimensional images of turbid media that provides more accurate quantification of optical absorption and higher resolution than standard diffuse reflectance measurements is presented.
Correlation-enhanced control of wave focusing in disordered media
Controlled wave propagation in disordered media is a challenge because of scattering processes. Now it is shown that for speckled targets much larger than the wavelength, long-range correlations
Transmission channels for light in absorbing random media
We study numerically the effects of optical absorption on highly transmitting channels in strongly scattering media. We observe that they are robust against weak absorption. Surprisingly, in case of
Light fields in complex media: Mesoscopic scattering meets wave control
Wave front shaping, the ability to manipulate light fields both spatially and temporally, in complex media is an emerging field with many applications. This review summarizes how insights from
Correlations and fluctuations of coherent wave transmission through disordered media.
In addition to the familiar large local intensity fluctuations, a novel memory eA'ect and long-range correlations in the transmission coefficients which decay to a positive background value are found.
Controlling light in scattering media non-invasively using the photoacoustic transmission matrix
An approach is demonstrated that allows the optical transmission matrix to be noninvasively measured over a large volume inside complex samples using a standard photoacoustic imaging set-up. This
Speckle-scale focusing in the diffusive regime with time-reversal of variance-encoded light (TROVE)
This work introduces a new approach, time reversal of variance-encoded light (TROVE), which demixes these spatial modes by variance- Encoded light to break the resolution barrier imposed by the ultrasound, and enables optical focusing and imaging with diffuse light at unprecedented, speckle-scale lateral resolution.
Diffuse Optics for Tissue Monitoring and Tomography.
The theoretical basis for near-infrared or diffuse optical spectroscopy (NIRS or DOS) is developed, and the basic elements of diffuse optical tomography (DOT) are outlined.
Photon migration in the presence of a single defect: a perturbation analysis.
We present an analytical perturbation analysis for studying the sensitivity of diffusive photon flux to the addition of a small spherical defect object in multiple-scattering media such as human
Noninvasive focusing through scattering layers using speckle correlations.
It is shown that the information obtained from speckle correlations can be used as a noninvasive feedback mechanism for wavefront shaping and this feedback is utilized to demonstrate non invasive diffraction-limited focusing of coherent light through thin scattering layers.