Circumventing the optical diffraction limit with customized speckles

Abstract

Speckle patterns have been widely used in imaging techniques such as ghost imaging, dynamic speckle illumination microscopy, structured illumination microscopy, and photoacoustic fluctuation imaging. Recent advances in the ability to control the statistical properties of speckles has enabled the customization of speckle patterns for specific imaging applications. In this work, we design and create special speckle patterns for parallelized nonlinear pattern-illumination microscopy based on fluorescence photoswitching. We present a proof-of-principle experimental demonstration where we obtain a spatial resolution three times higher than the diffraction limit of the illumination optics in our setup. Furthermore, we show that tailored speckles vastly outperform standard speckles. Our work establishes that customized speckles are a potent tool in parallelized super-resolution microscopy.

References in corpus (4)

• Exploiting speckle correlations to improve the resolution of wide-field fluorescence microscopy
• Structured illumination microscopy with unknown patterns and a statistical prior
• Statistics of diffusive and localized fields in the vortex core
• Computational Ghost Imaging

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