4.6 Article

Two-photon lensless endoscope

Journal

OPTICS EXPRESS
Volume 21, Issue 18, Pages 20713-20721

Publisher

OPTICAL SOC AMER
DOI: 10.1364/OE.21.020713

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Funding

  1. CNRS interdisciplinary mission
  2. Weizmann NaBi European Associated Laboratory
  3. ANR grant France Bio Imaging [ANR-10-INSB-04-01]
  4. France Life Imaging [ANR-11-INSB-0006]
  5. Region PACA
  6. Region Nord-Pas de Calais
  7. FEDER

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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. (C) 2013 Optical Society of America

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