CaltechAUTHORS
Published March 15, 2021 | Version Supplemental Material + Published
Journal Article Open

Spectrally resolved point-spread-function engineering using a complex medium

Creators

  • 1. ROR icon University of Queensland
  • 2. ROR icon California Institute of Technology
  • 3. ROR icon University of Paris-Saclay

Abstract

Propagation of an ultrashort pulse of light through strongly scattering media generates an intricate spatio-spectral speckle that can be described by means of the multi-spectral transmission matrix (MSTM). In conjunction with a spatial light modulator, the MSTM enables the manipulation of the pulse leaving the medium; in particular focusing it at any desired spatial position and/or time. Here, we demonstrate how to engineer the point-spread-function of the focused beam both spatially and spectrally, from the measured MSTM. It consists of numerically filtering the spatial content at each wavelength of the matrix prior to focusing. We experimentally report on the versatility of the technique through several examples, in particular as an alternative to simultaneous spatial and temporal focusing, with potential applications in multiphoton microscopy.

Additional Information

© 2021 Optical Society of America under the terms of the OSA Open Access Publishing Agreement. Received 23 Jul 2020; revised 26 Feb 2021; accepted 1 Mar 2021; published 9 Mar 2021. Funding: European Research Council (Grant SMARTIES - 724473); Agence Nationale de la Recherche (ANR-10-IDEX-0001-02 PSL*, ANR-10-LABX-0010); Australian Research Council (DE210100934). SG is a member of the Institut Universitaire de France. HBdA was supported by the LabEx ENS-ICFP: ANR-10-LABX-0010/ANR-10-IDEX-0001-02 PSL*. The authors declare no conflicts of interest. Data availability. Data underlying the results presented in this paper are not publicly available at this time but may be obtained from the authors upon reasonable request.

Attached Files

Published - oe-29-6-8985.pdf

Supplemental Material - 5115872.pdf

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5115872.pdf

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Additional details

Identifiers

Eprint ID
108891
Resolver ID
CaltechAUTHORS:20210429-144554501

Funding

European Research Council (ERC)
SMARTIES - 724473
Agence Nationale pour la Recherche (ANR)
ANR-10-IDEX-0001-02 PSL
Agence Nationale de la Recherche (ANR)
ANR-10-LABX-0010
Australian Research Council
DE210100934

Dates

Created
2021-04-29
Created from EPrint's datestamp field
Updated
2021-11-16
Created from EPrint's last_modified field