Rapid broadband characterization of scattering medium using hyperspectral imaging

Antoine Boniface, Ivan Gusachenko, Kishan Dholakia, Sylvain Gigan

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Scattering of a coherent ultrashort pulse of light by a disordered medium results in a complex spatiotemporal speckle pattern. The form of the pattern can be described by knowledge of a spectrally dependent transmission matrix, which can in turn be used to shape the propagation of the pulse through the medium. We introduce a method for rapid measurement of this matrix for the entire spectrum of the pulse based on a hyperspectral imaging system that is close to 2 orders of magnitude faster than any approach previously reported. We demonstrate narrowband as well as spatiotemporal refocusing of a femtosecond pulse temporally stretched to several picoseconds after propagation through a multiply scattering medium. This enables new routes for multiphoton imaging and manipulation through complex media.

Original languageEnglish
Article number346381
Pages (from-to)274-279
Number of pages6
JournalOptica
Volume6
Issue number3
DOIs
Publication statusPublished - 2019 Mar 20

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics

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