Optics Express· 2012Q1
High-speed scattering medium characterization with application to focusing light through turbid media
- 441citations
- Q1SCImago
- 2012year
Short summary
A new holographic technique rapidly characterizes scattering media by measuring its transmission matrix in 33.8 ms, enabling light to be focused through turbid environments.
AI-generated from the title and abstract; the full text is not read.
Key points
- Introduced a phase-control holographic technique for rapid scattering medium characterization.
- Measured a transmission matrix with 256 input modes in 33.8 ms.
- Achieved a focus with a signal-to-background ratio of 160.
- Demonstrated focusing through a temporally dynamic, strongly scattering sample.
AI-generated from the title and abstract; the full text is not read.
Abstract
We introduce a phase-control holographic technique to characterize scattering media with the purpose of focusing light through it. The system generates computer-generated holograms implemented via a deformable mirror device (DMD) based on micro-electro-mechanical technology. The DMD can be updated at high data rates, enabling high speed wavefront measurements using the transmission matrix method. The transmission matrix of a scattering material determines the hologram required for focusing through the scatterer. We demonstrate this technique measuring a transmission matrix with 256 input modes and a single output mode in 33.8 ms and creating a focus with a signal to background ratio of 160. We also demonstrate focusing through a temporally dynamic, strongly scattering sample with short speckle decorrelation times.
The authors' abstract, as published at the source. Optics Express, 2012 · DOI ↗
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Field: Acoustics and Ultrasonics
Acoustics and UltrasonicsPhysics and Astronomy