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Miniature 120-beam coherent combiner with 3D-printed optics for multicore fiber-based endoscopy

Siddharth Sivankutty, Andrea Bertoncini, Victor Tsvirkun, Naveen Gajendra Kumar, Gaelle Brévalle, Géraud Bouwmans, Esben Ravn Andresen, Carlo Liberale, and Hervé Rigneault

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Abstract

In this Letter, we report a high-efficiency, miniaturized, ultra-fast coherent beam, combined with 3D-printed micro-optics directly on the tip of a multicore fiber bundle. The highly compact device footprint (180 µm in diameter) facilitates its incorporation into a minimally invasive ultra-thin nonlinear endoscope to perform two-photon imaging.

© 2021 Optical Society of America

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Data Availability

Data underlying the results presented in this paper are not publicly available at this time but may be obtained from the authors upon reasonable request.

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