Work

Enhanced stability of the focus obtained by wavefront optimization in dynamical scattering media

Year: 2019

Type: preprint

Abstract: Focusing scattered light using wavefront shaping provides interesting perspectives to image deep in opaque samples, as e.g. in nonlinear fluorescence microscopy.Applying these technics to in vivo imaging remains challenging due to the short decorrelation time of the speckle in depth, as focusing and imaging has to be achieved within the decorrelation time.In this paper, we experimentally study the focus lifetime after focusing through dynamical scattering media, when iterative wavefront optimization and speckle decorrelation occur over the same timescale.We show experimental situations corresponding to a broad distribution of decay rates of the scattering paths, where the focus presents significantly higher stability than the surrounding speckle.

Authors: Blochet, Baptiste, Joaquina, Kelly, Blum, Lisa, Bourdieu, Laurent, Gigan, Sylvain

Institutions: École Normale Supérieure - PSL, Institut de Biologie de l'École Normale Supérieure, Laboratoire Kastler Brossel

Language: English

Topic: Random lasers and scattering media

Subfield: Acoustics and Ultrasonics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funders: Agence Nationale de la Recherche, Université Pierre et Marie Curie, H2020 European Research Council

Awards: Paris Sciences et Lettres, G282959247, Scattering Media as a Resource Towards Information Processing and Sensing, Acousto-optic Light Patterning for the Imaging of Neurons and Stimulation, G5734993032, G7334392398

OpenAlex ID: W2995459421

Cites: 27

Cited by: 22

Related to: 10