Imaging in complex media

Our work in this area includes imaging using phase conjugation, muli-mode fibers and harmonic holography with second harmonic nanoparticles (SHRIMPS). More recently we have explored speckle scanning microscopy for imaging through scattering layers. 



Professor Michael Unser, Biomedical Imaging Laboratory, EPFL



  1. Optical tomographic image reconstruction based on beam propagation and sparse regularization
    IEEE Transactions on Computational Imaging, Vol 2, No. 1, 59-70 (2016) 
  2. Isotropic inverse-problem approach for two-dimensional phase unwrappingJournal of the Optical Society of America A32 (6), 1092-1100 (2015) 
  3. Learning Approach to Optical TomographyOptica Volume 2, Issue 6, pp. 517-522 (2015)
  4. Improving the quality of filament-impaired images in Kerr media by statistical averagingΟptics Express Vol. 23, Iss. 1, pp. 431–444 (2015) 
  5. Optical-resolution photoacoustic imaging through thick tissue with a thin capillary as a dual optical-in acoustic-out waveguide, Physics Letters 106, 094102 (2015)
  6. Imaging blood cells through scattering biological tissue using speckle scanning microscopy, Optics Express, Vol. 22, pp. 3405-3413, January 2014
  7. Imaging in focusing Kerr media using reverse propagationPhotonics Research, Vol. 1, pp. 96-101, August 2013
  8. Multiple contrast metrics from the measurements of a digital confocal microscope, Biomedical Optics Express, Vol. 4, pp. 1091-1103, July 2013
  9. Seeing through turbidity with harmonic holographyApplied Optics, Vol. 52, pp. 567-578, February 2013
  10. Imaging: the fog clearsNature, Vol. 491, pp. 197-198, November 2012 
  11. Holographic coherent anti-Stokes Raman scattering bio-imagingBiomedical Optics Express, Vol. 3, pp. 1744-1749, July 2012
  12. Three-dimensional scanning microscopy through thin turbid mediaOptics Express, Vol. 20, pp. 2500-2506, January 2012 
  13. Imaging with second-harmonic radiation probes in living tissueBiomedical Optics Express, Vol. 2, pp. 2532-2539, August 2011
  14. Digital reverse propagation in focusing Kerr media, Physical Review A, Vol. 83, Art. 031802, March 2011
  15. Imaging through turbid layers by scanning the phase conjugated second harmonic radiation from a nanoparticle, Optics Express, Vol. 18, pp. 20723-20731, September 2010
  16. Digital phase conjugation of second harmonic radiation emitted by nanoparticles in turbid media,
    Optics Express, Vol. 18, pp. 12283-12290, May 2010
  17. Three-dimensional harmonic holographic microcopy using nanoparticles as probes for cell imagingOptics Express, Vol. 17, pp. 2880-2891, February 2009 
  18. Optical phase conjugation for turbidity suppression in biological samplesNature Photonics, Vol. 2, pp. 110-115, February 2008
  19. Harmonic holography: a new holographic principle, Applied Optics, Vol. 47, pp. A103-A110, February 2008


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