FORMATION OF THREE-DIMENSIONAL STRUCTURES OF METAL NANOPARTICLES IN ALKALI-HALIDE CRYSTALS USING INTERFERENCE LIGHT FIELD

Rapid progress in high technologies requires the implementation of new methods for recording, reproducing, and converting electromagnetic radiation in the visible and near-infrared ranges.Among those, of particular relevance is the problem of creating regular 3D arrays of nanoscale objects in condensed media and controlling their properties, structure, and topology.Such nanoobjects and their arrays offer efficient means for controllable data encoding and information recording.In particular, these can be created in materials based on additively colored alkali halide crystals (ACAHCs) containing F-centers.The advantages of these media are as follows: (i) nano-objects of very diverse structures and properties can be formed; (ii) the spatial distribution of quasi-metallic X-centers created in the ACAHC volume due to the F-X transformation of color centers under the action of the spatially inhomogeneous interference light field (ILF) completely reproduces its spatial structure.As a result, changing the ILF configuration in the ACAHC volume enables control of the spatial structure formed by the X-centers.The methods for controlling the spatial distribution of X-centers have been tested in holographic practice and confirmed by modeling results.They can serve as a prototype for a wide range of procedures for the purposeful generation of structures from nanoparticles emerging as products of photolysis in the crystal volume.