title: Adaptive phase compensation for ultracompact laser scanning endomicroscopy.
abstract: We present an approach to laser scanning endomicroscopy that requires no moving parts and can be implemented with no distal scanners or optics, permitting extremely compact endoscopic probes to be developed. Our approach utilizes a spatial light modulator to correct for phase variations across a fiber imaging bundle and to encode for arbitrary wavefronts at the distal end of the fiber bundle. Thus, it is possible to realize both focusing and beam scanning at the output of the fiber bundle with no distal components. We present proof of principle results to illustrate three-dimensional scanning of the focal spot and exemplar images of a United States Air Force resolution test chart.
authors.affiliation: Photonics Group, Physics Department, Imperial College London, Prince Consort Road, London SW7 2BW, UK. alex.thompson08@imperial.ac.uk
authors.forename: Alex J
authors.initials: AJ
authors.lastname: Thompson
authors.forename: Carl
authors.initials: C
authors.lastname: Paterson
authors.forename: Mark A A
authors.initials: MA
authors.lastname: Neil
authors.forename: Chris
authors.initials: C
authors.lastname: Dunsby
authors.forename: Paul M W
authors.initials: PM
authors.lastname: French
mesh_terms: D021621:Imaging, Three-Dimensional; D008027:Light; D018613:Microscopy, Confocal / Q000379:methods*; D055620:Optical Phenomena