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High resolution multiple excitation spot optical microscopy
Author(s) -
Shilpa Dilipkumar,
Partha Pratim Mondal
Publication year - 2011
Publication title -
aip advances
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.421
H-Index - 58
ISSN - 2158-3226
DOI - 10.1063/1.3598413
Subject(s) - microscopy , optics , point spread function , resolution (logic) , confocal microscopy , excitation , image resolution , materials science , light sheet fluorescence microscopy , optical microscope , detector , fluorescence , super resolution microscopy , fluorescence microscope , scanning confocal electron microscopy , physics , scanning electron microscope , computer science , quantum mechanics , artificial intelligence
We propose fundamental improvements in three-dimensional (3D) resolution of multiple excitation spot optical microscopy. The excitation point spread function (PSF) is generated by two interfering counter-propagating depth-of-focus beams along the optical axis. Detection PSF is obtained by coherently interfering the emitted fluorescent light (collected by both the objectives) at the detector. System PSF shows upto 14-fold reduction in focal volume as compared to confocal, and almost 2-fold improvement in lateral resolution. Proposed PSF has the ability to simultaneously excite multiple 3D-spots of sub-femtoliter volume. Potential applications are in fluorescence microscopy and nanobioimaging

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