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Communication Dans Un Congrès Année : 2023

Flexible two-photon lensless endoscope with tapered multicore fibers

Résumé

The lensless endoscope represents the ultimate limit in miniaturization of imaging tools: an image can be transmitted through an optical fiber by numerical or physical inversion of the fiber's pre- measured transmission matrix. We present here a novel fiber-optic component, a "tapered multi-core fiber (MCF)", designed for integration into ultra-miniaturized endoscopes for minimally invasive two-photon point-scanning imaging. This new design addresses the power delivery issue that has faced MCF based lensless endoscopes. We achieve experimentally a factor 6.0 increase in two-photon signal yield while keeping the ability to point-scan by the memory effect. We report two-photon fluorescent imaging of cells and neurons with these improved MCF tapered fibers.
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Dates et versions

hal-03982027 , version 1 (10-02-2023)

Identifiants

  • HAL Id : hal-03982027 , version 1

Citer

Hervé Rigneault, Esben Ravn Andresen, Siddharth Sivankutty, Géraud Bouwmans, Rosa Cossart, et al.. Flexible two-photon lensless endoscope with tapered multicore fibers. Photonics West 2023, Jan 2023, San Francisco, United States. ⟨hal-03982027⟩
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