Two-Photon Absorption Around Telecommunications Wavelengths
Pierre-Antoine Bouit, Olivier Maury and Chantal Andraud
This review reports different approaches of molecular engineering for the design of two-photon absorbers in the infrared around telecommunications wavelengths. In this spectral range recently investigated, several families of systems are described: dipolar, quadrupolar molecules, polymethines, diradical hydrocarbons, porphyrines, metallic complexes with maximum linear absorption from 700 to 1200 nm and two-photon efficiency up to 115000 GM. Some of these systems have already found applications such as optical limiting.
Keywords: Two-photon absorption, telecommunications wavelength, infrared.