| Autor: |
Chaigne, T., Katz, O., Boccara, A. C., Fink, M., Bossy, E., Gigan, S. |
| Rok vydání: |
2013 |
| Předmět: |
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| Zdroj: |
Nature Photonics 8, 58 (2014) |
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1038/nphoton.2013.307 |
| Popis: |
Optical wavefront-shaping has emerged as a powerful tool to manipulate light in strongly scattering media. It enables diffraction-limited focusing and imaging at depths where conventional microscopy techniques fail. However, while most wavefront-shaping works to-date exploited direct access to the target or implanted probes, the challenge is to apply it non-invasively inside complex samples. Ultrasonic-tagging techniques have been recently demonstrated but these require a sequential point-by- point acquisition, a major drawback for imaging applications. Here, we introduce a novel approach to non-invasively measure the optical transmission-matrix inside a scattering medium, exploiting the photo-acoustic effect. Our approach allows for the first time to simultaneously discriminate, localize, and selectively focus light on multiple targets inside a scattering sample, as well as to recover and exploit the scattering medium properties. Combining the powerful approach of the transmission-matrix with the advantages of photoacoustic imaging opens the path towards deep-tissue imaging and light-delivery utilizing endogenous optical contrast. |
| Databáze: |
arXiv |
| Externí odkaz: |
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