Rapid broadband characterization of scattering medium using hyperspectral imaging

Antoine Boniface, Ivan Gusachenko, Kishan Dholakia, Sylvain Gigan

Research output: Contribution to journalArticlepeer-review

24 Citations (Scopus)
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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
Pages (from-to)274-279
JournalOptica
Volume6
Issue number3
Early online date4 Mar 2019
DOIs
Publication statusPublished - 20 Mar 2019

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