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The problem of the creation the coherent structures (CS) in relaxed optics (RO) is the one of the general problem of this chapter of modern physics. Coherent structures are called new phases of the matter, with were created after laser irradiation. Practically these are the "traces" of the interaction laser irradiation and matter in matter. These structures may be classified as first-order and second-order structures. One has various energic and time conditions of the creation and stability. The problem of the classification and modelling of these structures may be resolved with the help of short-range, long-range action and mixed approximations of the interaction light and solid. Basic results of these classification and some results of modelling CS are discussed and analyzed.