title: Nonlinear optoacoustic transformation in the system of dielectric substrate/submicron metal coating/liquid.
abstract: The optoacoustic method has been shown to be an accurate technique for the measurement of the properties of submicron metal coatings deposited on a dielectric substrate, i.e., mirrors. The method has been previously theoretically described in terms of a linear model of optoacoustic transformation in a system substrate/coating/liquid. The goal of the present work was to determine the limits at which the linear model is still applicable. The modification of the laser induced acoustic signal profiles and transfer functions of optoacoustic transformation versus the laser fluence was studied for two liquids: ethanol and water.
authors.affiliation: International Laser Center of M. V. Lomonosov Moscow State University, Leninskie Gory, Moscow, 119991, Russia. d.kopylova@gmail.com
authors.forename: Daria S
authors.initials: DS
authors.lastname: Kopylova
authors.forename: Ivan M
authors.initials: IM
authors.lastname: Pelivanov
mesh_terms: D003198:Computer Simulation; D004867:Equipment Design; D000431:Ethanol; D007834:Lasers; D016014:Linear Models; D008670:Metals; D017711:Nonlinear Dynamics; D009716:Numerical Analysis, Computer-Assisted; D061088:Photoacoustic Techniques / Q000295:instrumentation*; D013696:Temperature; D014867:Water
chemical_list: D008670:Metals; D014867:Water; D000431:Ethanol