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. Author manuscript; available in PMC: 2018 Jun 14.
Published in final edited form as: Chem Rev. 2016 Dec 14;117(7):5070–5094. doi: 10.1021/acs.chemrev.6b00545

Figure 14.

Figure 14

Experimental demonstration of one approach to subdiffraction SRS imaging. (a) Similar to fluorescence-based super-resolution techniques, the use of the doughnut-shaped pulse to eliminate SRS signal from the edges of the focal spot, providing signal from a subdiffraction region in the center of the focus. (b) Proof of resolution improvement with this approach, showing the Raman signal intensity while scanning across the sharp interface of a diamond plate. The addition of the depletion beam significantly improves the spatial resolution. Adapted with permission from ref 191. Copyright 2016 American Chemical Society.