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. 2001 Mar;80(3):1568–1574. doi: 10.1016/S0006-3495(01)76129-2

Coherent scattering in multi-harmonic light microscopy.

L Moreaux 1, O Sandre 1, S Charpak 1, M Blanchard-Desce 1, J Mertz 1
PMCID: PMC1301348  PMID: 11222317

Abstract

By focusing a pulsed laser beam into a sample, harmonic up-conversion can be generated as well as multi-photon excited fluorescence. Whereas multi-photon excited fluorescence microscopy is well established, the use of multi-harmonic generation for three-dimensional image contrast is very recent. Both techniques can provide similar resolution and, for adequate radiating source density, comparable signal levels, allowing them to be combined in a single versatile instrument. However, harmonic generation differs fundamentally from fluorescence generation in that it is coherent and produces radiation patterns that are highly sensitive to phase. As such, multi-harmonic generation microscopy provides a unique window into molecular spatial organization that is inaccessible to fluorescence.

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Selected References

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