Large band multiphoton microendoscope with single-core standard graded-index multimode fiber based on spatial beam self-cleaning

Tigran Mansuryan; Nour Tabcheh; Marc Fabert; Katarzyna Krupa; Raphael Jauberteau; Alessandro Tonello; Claire Lefort; Mario Ferraro; Fabio Mangini; Mario Zitelli; Massimiliano Papi; Ivo Boskoski; Stefan Wabnitz; Vincent Couderc

doi:10.1117/12.2652346

14 March 2023 Large band multiphoton microendoscope with single-core standard graded-index multimode fiber based on spatial beam self-cleaning

Tigran Mansuryan, Nour Tabcheh, Marc Fabert, Katarzyna Krupa, Raphael Jauberteau, Alessandro Tonello, Claire Lefort, Mario Ferraro, Fabio Mangini, Mario Zitelli, Massimiliano Papi, Ivo Boskoski, Stefan Wabnitz, Vincent Couderc

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Proceedings Volume 12356, Endoscopic Microscopy XVIII; 123560B (2023) https://doi.org/10.1117/12.2652346
Event: SPIE BiOS, 2023, San Francisco, California, United States

Abstract

We demonstrate the feasibility of multiphoton fluorescence imaging with high spatial resolution using commercially available single-core 50/125 multimode graded-index fiber. Light propagating forward inside the endoscopic fiber undergoes a non-reciprocal propagation exhibiting a robust nonlinear spatial self-cleaning process. Whereas fluorescence from nonlinear interactions with biological samples linearly propagates backward along the same fiber. The scanner head, located at the distal end of the endoscope and suited for multimode fibers, is based on a ceramic tube where the fiber end follows a spiral course to explore the sample. No knowledge of the fiber transfer matrix is required.

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Tigran Mansuryan, Nour Tabcheh, Marc Fabert, Katarzyna Krupa, Raphael Jauberteau, Alessandro Tonello, Claire Lefort, Mario Ferraro, Fabio Mangini, Mario Zitelli, Massimiliano Papi, Ivo Boskoski, Stefan Wabnitz, and Vincent Couderc "Large band multiphoton microendoscope with single-core standard graded-index multimode fiber based on spatial beam self-cleaning", Proc. SPIE 12356, Endoscopic Microscopy XVIII, 123560B (14 March 2023); https://doi.org/10.1117/12.2652346

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