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CATEGORIES:Isaac Newton Institute Seminar Series
SUMMARY:Polarization and spatial coherence of light in dis
 ordered media - Kevin Vynck (CNRS (Centre national
  de la recherche scientifique))
DTSTART;TZID=Europe/London:20230324T143000
DTEND;TZID=Europe/London:20230324T150000
UID:TALK195808AThttp://talks.cam.ac.uk
URL:http://talks.cam.ac.uk/talk/index/195808
DESCRIPTION:Light transport in disordered media is characteriz
 ed by a multiple scattering process\, which scramb
 les the direction\, phase and polarization of the 
 propagating waves. Since the polarization of an in
 cident wave is lost on average after a few scatter
 ing events\, it is expected that the propagation o
 f the average intensity in the diffusive limit cor
 responds to that of a scalar field. This progressi
 ve depolarization has been studied theoretically a
 nd experimentally for almost three decades\, yet r
 ecent studies have shown that many aspects related
  to the vector nature of light in disordered media
  remain to be investigated.\nIn this talk\, I will
  present a theoretical analysis based on multiple 
 scattering theory of the polarization and spatial 
 coherence of light in disordered media. Analytical
  expressions for the diagonal and off-diagonal ter
 ms of the field correlation matrix are derived\, r
 evealing in particular a strong anisotropy of spat
 ial coherence even at large distances from a polar
 ized source [1]. We also show that short-range str
 uctural correlations\, described via the classical
  scattering anisotropy parameter g\, affect the di
 ffusion of polarized light in a highly nontrivial 
 way [2].\n[1] K. Vynck\, R. Pierrat\, R. Carminati
 \, Phys. Rev. A 89\, 013842 (2014).[2] K. Vynck\, 
 R. Pierrat\, R. Carminati\, Phys. Rev. A 94\, 0338
 51 (2016).\nCo-authors: Romain Pierrat and R&eacut
 e\;mi Carminati
LOCATION:Seminar Room 1\, Newton Institute
CONTACT:
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