Parabolic and rectangular self-similar evolution in saturable media

ROMANIAN REPORTS IN PHYSICS(2023)

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摘要
We numerically demonstrate the existence of parabolic and rectangular self-similar propagations of optical beams in saturable media. Rectangular selfsimilar evolution is achieved by imposing an external optical potential (lattice) that acts as a pulse shaping mechanism and it is shown that a rectangular shaped profile can be obtained by providing a delicate balance between the nonlinearity and saturation of the medium.
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关键词
self-similar evolution,pulse shaping,similaritons
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