Abstract
A brief overview of the recent advances in the theoretical and experimental study of self-focusing and self-trapping of light is given. Physical mechanisms of self-trapping and different types of self-trapped beams, spatial optical solitons, and their stability are discussed including solitons of non-Kerr media, self-trapped beams and their spiralling in photorefractive crystals, multi-hump solitons and solitonic gluons, discrete solitons in wave guide arrays, etc. A brief summary of the earlier and more recent experimental observations of spatial solitons, transverse instabilities, and soliton interactions is included as well.
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