INFLUENCE OF THE DEFOCUSING PARAMETER OF DUAL LASER PULSES ON THE POSSIBILITY OF DESIGNING THIN-FILM CAS-SENSITIVE SENSORS

The possibility was studied of creating thin-film gas-sensitive sensors using composite materials containing tin in their composition, which can significantly improve their characteristic. In addition, a layer-by-layer analysis of metals and multicomponent alloys was carried out under the action of dual laser pulses on a target in an air atmosphere. All experiments were carried out using a laser two-pulses multichannel atomic emission spectrometer LSS-1. In the course of this study, the processes of formation of a certain component composition of the near-surface laser plasma, as well as the influence of the defocusing parameter between doubled laser pulses upon their impact on the surface of the irradiated sample, were studied. Thus, this work illustrated the development of methods for obtaining nanoclusters of chemical elements during spectroscopic studies of laser plasma formed by the action of two successive pulses on a target and the possibility of obtaining nanofilms of both pure metals and composite alloys for subsequent practical application.

gas-sensitive sensors, double laser pulses, laser plasma, layer-by-layer analysis, deposition of thin films, multichannel atomic emission spectrometry