Abstract
Scattering prevents light from being focused in turbid media. The effect of scattering can be negated through wavefront shaping techniques when a localized form of feedback is available. Even in the absence of such a localized reporter, wavefront shaping can blindly form a single diffraction-limited focus when the feedback response is nonlinear. We developed and experimentally validated a model that accurately describes the statistics of this blind focusing process. We show that maximizing the nonlinear feedback signal only results in the formation of a focus when a limited number of reporters are contributing to the signal. Using our model, we can calculate the minimal requirements for the number of controlled spatial light modulator segments and the order of nonlinearity to blindly focus light through strongly scattering media.
| Original language | English |
|---|---|
| Pages (from-to) | 11673-11688 |
| Number of pages | 16 |
| Journal | Optics express |
| Volume | 27 |
| Issue number | 8 |
| DOIs | |
| Publication status | Published - 12 Apr 2019 |
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Blind focusing through strongly scattering media using wavefront shaping with nonlinear feedback. / Osnabrugge, Gerwin; Amitonova, Lyubov V.; Vellekoop, Ivo M.
In: Optics express, Vol. 27, No. 8, 12.04.2019, p. 11673-11688.Research output: Contribution to journal › Article › Academic › peer-review
TY - JOUR
T1 - Blind focusing through strongly scattering media using wavefront shaping with nonlinear feedback
AU - Osnabrugge, Gerwin
AU - Amitonova, Lyubov V.
AU - Vellekoop, Ivo M.
PY - 2019/4/12
Y1 - 2019/4/12
N2 - Scattering prevents light from being focused in turbid media. The effect of scattering can be negated through wavefront shaping techniques when a localized form of feedback is available. Even in the absence of such a localized reporter, wavefront shaping can blindly form a single diffraction-limited focus when the feedback response is nonlinear. We developed and experimentally validated a model that accurately describes the statistics of this blind focusing process. We show that maximizing the nonlinear feedback signal only results in the formation of a focus when a limited number of reporters are contributing to the signal. Using our model, we can calculate the minimal requirements for the number of controlled spatial light modulator segments and the order of nonlinearity to blindly focus light through strongly scattering media.
AB - Scattering prevents light from being focused in turbid media. The effect of scattering can be negated through wavefront shaping techniques when a localized form of feedback is available. Even in the absence of such a localized reporter, wavefront shaping can blindly form a single diffraction-limited focus when the feedback response is nonlinear. We developed and experimentally validated a model that accurately describes the statistics of this blind focusing process. We show that maximizing the nonlinear feedback signal only results in the formation of a focus when a limited number of reporters are contributing to the signal. Using our model, we can calculate the minimal requirements for the number of controlled spatial light modulator segments and the order of nonlinearity to blindly focus light through strongly scattering media.
UR - http://www.scopus.com/inward/record.url?scp=85064452705&partnerID=8YFLogxK
U2 - 10.1364/OE.27.011673
DO - 10.1364/OE.27.011673
M3 - Article
VL - 27
SP - 11673
EP - 11688
JO - Optics express
JF - Optics express
SN - 1094-4087
IS - 8
ER -