z -scan experiments and beam propagation modeling were conducted to determine the nonlinear absorption and refractive index cross sections of n-type indium arsenide (InAs). A doubled carbon dioxide pulsed laser operating at 4.78μm was used to generate free carriers via two-photon absorption. Using published values for the two-photon absorption coefficient in InAs, a nonlinear beam propagation model and a data fitting routine were used to extract the nonlinear absorption and refractive index cross sections.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.