Journal
OPTICS EXPRESS
Volume 17, Issue 18, Pages 16100-16110Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.17.016100
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Funding
- European Community [201837]
- German National Academic Foundation
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STED microscopes are commonly built using separate optical paths for the excitation and the STED beam. As a result, the beams must be co-aligned and can be subject to mechanical drift. Here, we present a single-path STED microscope whose beams are aligned by design and hence is insensitive to mechanical drift. The design of a phase plate is described which selectively modulates the STED beam but leaves the excitation beam unaffected. The performance of the single-beam setup is on par with previous dual-beam designs. (C) 2009 Optical Society of America
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