## 1 Introduction  
With the development of opto- and micro-electronics, microsystems engineering and sensors, the demands on performance and power consumption of the devices being developed are increasing, while reducing the weight and size of components is also a rising demand [1, 2, 3]. Laser thermochemical processes of oxidation of the metal surface are promising for creating new advanced technologies for the production of components for such devices [4]. Laser-induced thermochemical recording of nano- and micro-dimensional structures is attracting increased interest due to various important applications in photonics, e.g., for optical transducer fabrication [5, 6, 7]. The application of metal-metal oxide nanomaterials provides an opportunity to develop efficient heterogeneous catalysts with high selectivity, stability and fast performance [8]. A progressive application of oxide materials is the heterostructured solar energy [9]. The laser is a source of light. Compared to other light sources, the laser has several unique properties due to the coherent and highly directional nature of its emission [10; 11; 12]. \"Non-laser\" light does not have such features. The low divergence of laser beams allows optical systems to concentrate light energy in negligible volumes, creating enormous densities of energy [13]. Moreover, the radiation from such sources tends to fill a wide wavelength range, i.e., it is non-monochromatic. The monochromatization of such radiation is achieved at the cost of significant energy losses, which become greater the narrower the spectral line becomes. The above-mentioned features make lasers a unique source of light and open up entirely new possibilities for the use of light beams [14]. Laser-matter interaction is one of the most important scientific fields of modern laser physics [15]. This direction has significantly enhanced the understanding of the fundamental photophysical processes occurring in matter, primarily in condensed media [16], under the influence of intense light streams of different durations and wavelengths. It has also enabled the development of the physical foundations of numerous promising applied areas related to lasers and their applications [17; 18]. Laser radiation, as a coherent light by itself, is also a form of electromagnetic radiation [19]. Therefore, the interaction of laser radiation with matter is the interaction with matter of an electromagnetic wave with its specific properties and characteristics (coherence, monochromaticity, etc.). The processes of laser exposure on materials are primarily related to local heating, i.e., the transfer of energy from the electromagnetic wave into the substance [20]. Among the effects caused by laser-matter interaction, a special place is held by the effects associated with chemical transformations of matter in the field of a powerful light wave [21]. As is known, the laser beam has the potential to initiate chemical reactions via its thermal effect on chemically active media [22], as well as via light excitation of the internal degrees of freedom of atoms and molecules [23]. The reactions in chemically active laser plasma are also intensively investigated in [24]. Each of these areas of laser chemistry, which focuses on the study of thermochemical, photochemical and plasma chemical processes, solves its own special problems, has its own original research methods, and makes use of the unique properties of laser radiation in its own way [25; 26; 27]. All of these areas are connected not only by the fact that their main tool is the laser, but also by the fact that they are united by the common scientific theory of the resonance interaction of electromagnetic irradiation with quantum systems [28]. The issues of interaction of laser radiation with metals, especially in an oxidizing environment, are of great importance.