Turbidity suppression from the ballistic to the diffusive regime in biological tissues using optical phase conjugation

  • McDowell E
  • Cui M
  • Vellekoop I
 et al. 
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We describe the amplitude and resolution trends of the signals acquired by turbidity suppression through optical phase conjugation (TSOPC) with samples that span the ballistic and diffusive scattering regimes. In these experiments, the light field scattered through a turbid material is written into a hologram, and a time-reversed copy of the light field is played back through the sample. In this manner, the wavefront originally incident on the sample is reconstructed. We examine a range of scattering samples including chicken breast tissue sections of increasing thickness and polyacrylamide tissue-mimicking phantoms with increasing scattering coefficients. Our results indicate that only a small portion of the scattered wavefront (

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  • Emily J. McDowell

  • Meng Cui

  • Ivo M. Vellekoop

  • Vahan Senekerimyan

  • Zahid Yaqoob

  • Changhuei Yang

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