Fundamentals of two-photon fabrication

Abstract The phenomenon of multiphoton absorption (MPA) was predicted in 1930 and was first realized experimentally in 1961. Since that time, the development of reliable ultrafast lasers has allowed MPA to undergo a metamorphosis from a spectroscopic tool into a powerful enabling technology for high-resolution, 3D imaging, and fabrication. This chapter provides an introduction to the optical physics of MPA as well as to some of the chemical principles behind multiphoton fabrication in polymers and other materials.

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