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arXiv · 1510.04076

Super-resolution deep imaging with hollow Bessel beam STED microscopy

Wentao Yu·Ziheng Ji·Dashan Dong·Xusan Yang·Yunfeng Xiao·Qihuang Gong·Peng Xi·Kebin Shi
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Abstract

Stimulated emission depletion (STED) microscopy has become a powerful imaging and localized excitation method beating the diffraction barrier for improved lateral spatial resolution in cellular imaging, lithography, etc. Due to specimen-induced aberrations and scattering distortion, it has been a great challenge for STED to maintain consistent lateral resolution deeply inside the specimens. Here we report on a deep imaging STED microscopy by using Gaussian beam for excitation and hollow Bessel beam for depletion (GB-STED). The proposed scheme shows the improved imaging depth up to ~155{\mu}m in solid agarose sample, ~115{\mu}m in PDMS and ~100{\mu}m in phantom of gray matter in brain tissue with consistent super resolution, while the standard STED microscopy shown a significantly reduced lateral resolution at the same imaging depth. The results indicate the excellent imaging penetration capability of GB-STED, making it a promising tool for deep 3D imaging optical nanoscopy and laser fabrication.

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Wentao Yu, Ziheng Ji, Dashan Dong, Xusan Yang, Yunfeng Xiao, Qihuang Gong, Peng Xi, Kebin Shi. 2015-10-14. Super-resolution deep imaging with hollow Bessel beam STED microscopy. https://doi.org/10.1002/lpor.201500151

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