Characterization of a fiber-coupled EvenField illumination system for fluorescence microscopy

Fluorescence microscopy benefits from spatially and temporally homogeneous illumination with the illumination area matched to the shape and size of the camera sensor. Fiber-coupled illumination schemes have the added benefit of straightforward and robust alignment and ease of installation compared t...

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Bibliographic Details
Published in:Optics express 2021-07, Vol.29 (15), p.24349-24362
Main Authors: Berry, Kyla, Taormina, Mike, Maltzer, Zoe, Turner, Kristen, Gorham, Melissa, Nguyen, Thuc, Serafin, Robert, Nicovich, Philip R.
Format: Article
Language:English
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Summary:Fluorescence microscopy benefits from spatially and temporally homogeneous illumination with the illumination area matched to the shape and size of the camera sensor. Fiber-coupled illumination schemes have the added benefit of straightforward and robust alignment and ease of installation compared to free-space coupled illumination. Commercial and open-source fiber-coupled, homogenized illumination schemes have recently become available to the public; however, there have been no published comparisons of speckle reduction schemes to date. We characterize three different multimode fibers in combination with two laser speckle reduction devices and compare spatial and temporal profiles to a commercial unit. This work yields a new design, the EvenField Illuminator, which is freely available for researchers to integrate into their own imaging systems.
ISSN:1094-4087
1094-4087
DOI:10.1364/OE.430440