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A method for single particle tracking through a multimode fiber
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OA
AI
DOI：10.1364/OE.470111.png)
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Abstract
En 中文
Multimode optical fiber (MMF) endoscopes have recently gained widespread attention as a novel tool for imaging deep within tissue using light microscopy. We here present a method for particle tracking through the MMF, which overcomes the lack of a fast enough wide-field fluorescence imaging modality for this type of endoscope, namely a discrete implementation of orbital particle tracking. We achieve biologically relevant tracking speeds (up to 1.2 mu m/s) despite using a slow SLM for the wavefront shaping. We demonstrate a tracking accuracy of lambda/50 for a 0.3 NA fiber and show tracking of a pinhole moving to mimic Brownian motion with diffusion rates of up to 0.3 mu m2/s.
Keywords:
CELL
MEMBRANE
MICROSCOPY
RESOLUTION
MOLECULES
LIGHT