Nonparaxial dark solitons in optical Kerr media.
We show that the nonlinear equation that describes nonparaxial Kerr propagation, together with the already reported bright-soliton solutions, admits of (1 + 1)D dark-soliton solutions. Unlike their paraxial counterparts, dark solitons can be excited only if their asymptotic normalized intensity u2infinity is below 3/7; their width becomes constant when u2infinity approaches this value.
Ciattoni
Alessandro
A
Istituto Nazionale per la Fisica della Materia, Unità di Ricerca Universitá dell'Aquila, 67010 L'Aquila, Italy, and Dipartimento di Fisica, Università dell'Aquila, 67010 L'Aquila, Italy. alessandro.ciattoni@aquila.infn.it
Crosignani
Bruno
B
Mookherjea
Shayan
S
Yariv
Amnon
A