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Phys Rev Lett. 2002 Sep 23;89(13):133901. Epub 2002 Sep 9.

Collisions between optical spatial solitons propagating in opposite directions.

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Physics Department and Solid State Institute, Technion, Haifa 32000, Israel.


We formulate the theory describing the evolution and interactions between optical spatial solitons that propagate in opposite directions. We show that coherent collisions between counterpropagating solitons give rise to a new focusing mechanism resulting from the interference between the beams, and that interactions between such solitons are insensitive to the relative phase between the beams.

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