Two-Photon Excitation

Two-photon excitation is a process of stimulating atoms or molecules with two photons of lower energy than a single photon of the same frequency.

Two-photon fluorescence image (green) of a cross section of rhizome colored with lily of the valley. The excitement is at 840nm, and the red and blue colors represent other channels of multiphoton techniques which have been superimposed.

Physics

Unraveling Two-Photon Excitation: From Basics to Applications

January 5, 2023March 5, 2023 Physics

Two-photon excitation, a unique form of light-matter interaction in which two photons are absorbed simultaneously by a material, is one such interaction that has a wide range of applications.

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