Three-photon excited fluorescence imaging of unstained tissue using a GRIN lens endoscope. Academic Article uri icon

Overview

abstract

  • We present a compact and portable three-photon gradient index (GRIN) lens endoscope system suitable for imaging of unstained tissues, potentially deep within the body, using a GRIN lens system of 1 mm diameter and 8 cm length. The lateral and axial resolution in water is 1.0 μm and 9.5 μm, respectively. The ~200 μm diameter field of view is imaged at 2 frames/s using a fiber-based excitation source at 1040 nm. Ex vivo imaging is demonstrated with unstained mouse lung at 5.9 mW average power. These results demonstrate the feasibility of three-photon GRIN lens endoscopy for optical biopsy.

publication date

  • April 1, 2013

Identity

PubMed Central ID

  • PMC3646593

Scopus Document Identifier

  • 84877090425

Digital Object Identifier (DOI)

  • 10.1364/BOE.4.000652

PubMed ID

  • 23667782

Additional Document Info

volume

  • 4

issue

  • 5