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One-dimensional transverse modulational instability in nonlocal media with a reorientational nonlinearity

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3 Author(s)
Assanto, G. ; Nonlinear Opt. & Optoelectronics Lab., Univ. of Rome, Italy ; Peccianti, M. ; Conti, C.

Transverse modulational instability is investigated in undoped nematic liquid crystals, a highly nonlocal material system encompassing a reorientational nonlinear response. Using an elliptic Gaussian excitation, we observe the one-dimensional development of transverse patterns eventually leading to beam breakup, filamentation, and spatial solitons, both in the cases of spatially coherent and partially incoherent excitations.

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Selected Topics in Quantum Electronics, IEEE Journal of  (Volume:10 ,  Issue: 5 )