Open AccessTwo-photon lensless endoscope
Author(s) -
Esben Ravn Andresen,
Géraud Bouwmans,
Serge Monneret,
Hervé Rigneault
Publication year - 2013
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.21.020713
Subject(s) - optics , rhodamine 6g , endoscope , photon , femtosecond , materials science , physics , laser , medicine , fluorescence , radiology
We report a first demonstration of two-photon endoscopic imaging with a lensless endoscope. The endoscope probe is a double-clad bundle of single-mode fibers; point excitation and scanning is achieved by coherent combining of femtosecond light pulses propagating in the single-mode fibers; and back-scattered two-photon signal is collected through the multi-mode inner cladding. We demonstrate the two-photon endoscope on a test sample of rhodamine 6G crystals.