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Proceedings Paper

New developments in two photon endoscopy
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Paper Abstract

We designed and constructed a two-fiber-optic two-photon endoscope with compact two axes piezo scanner system and a miniature high 0.65 NA Grin lens objective. The high NA GRIN lens objective coupled to the fibers with a beam splitter cube represent a rigid miniaturized optical system block which is scanned as a whole by a piezo scanner allowing always an on-axes beam irradiation of the optical system. We have demonstrated the ability of our system to perform good images in the micrometer field. Fluorescence detection was able at different wavelengths between 790 and 840 nm which could allow SHG detection. The endoscope is high flexible and controllable in terms of time acquisition, resolution and magnification. Fluorescence images were acquired over a maximal 420 μm x 420 μm field-of-view.

Paper Details

Date Published: 3 March 2009
PDF: 9 pages
Proc. SPIE 7172, Endoscopic Microscopy IV, 717204 (3 March 2009); doi: 10.1117/12.808781
Show Author Affiliations
M. Schwarz, Fraunhofer Institute of Biomedical Technology (Germany)
I. Riemann, Fraunhofer Institute of Biomedical Technology (Germany)
M. Weinigel, JenLab GmbH (Germany)
K. König, JenLab GmbH (Germany)
B. Messerschmidt, Grintech GmbH (Germany)
R. Le Harzic, Fraunhofer Institute of Biomedical Technology (Germany)

Published in SPIE Proceedings Vol. 7172:
Endoscopic Microscopy IV
Guillermo J. Tearney; Thomas D. Wang, Editor(s)

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