Article

Abstract

• Focusing inside scattering media is a challenging task with a variety of applications in biomedicine. State of the art methods mostly require invasive feedback inside or behind the sample, limiting practical use. We present a technique for dynamic control and focusing inside scattering media that combines two powerful methods: optical coherence tomography (OCT) and wave-front shaping (WFS). We use OCT as a non-invasive feedback for WFS optimization of a separate, penetrating laser. Energy absorbed in the sample, creates thermal expansions that are used for the feedback mechanism. By maximizing thermal deformations within a selected focal region, we demonstrate enhanced focusing of light through scattering media beyond the ballistic regime and within the penetration range of OCT.

Creator

• Tzang, Omer
• Piestun, Rafael
• Niv, Eyal
• Caravaca-Aguirre, Antonio M

Date Issued

• 2017-03-20

Academic Affiliation

• Electrical, Computer and Energy Engineering (ECEE)

Journal Title

• Optics Express

Journal Issue/Number

• 6

Journal Volume

• 25

File Extent

• 6122-6131

Publisher

• Optical Society of America

Last Modified

• 2019-12-05

Identifier

• PubMed ID: 28380967

Resource Type

• Article

Rights Statement

• In Copyright

DOI

•  http://dx.doi.org/10.1364/OE.25.006122

ISSN

• 1094-4087

Language

• English [eng]

Relationships

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