Abstract
We present a stimulated emission depletion (STED) microscope that provides 3-D super resolution by simultaneous depletion using beams with both a helical phase profile for enhanced lateral resolution and an annular phase profile to enhance axial resolution. The 3-D depletion point spread function is realised using a single spatial light modulator that can also be programmed to compensate for aberrations in the microscope and the sample. We apply it to demonstrate the first 3-D super-resolved imaging of an immunological synapse between a Natural Killer cell and its target cell. © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Original language | English |
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Journal | Journal of biophotonics |
DOIs | |
Publication status | Published - 2013 |
Keywords
- Confocal microscopy
- Fluorescence microscopy
- Immune synapse
- Nanoscopy
- STED microscopy
- Super-resolution