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APS » Journals » Phys. Rev. Lett. » Volume 91 » Issue 26
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Phys. Rev. Lett. 91, 263903 (2003) [4 pages]

Molding and Stretched Evolution of Optical Solitons in Cumulative Nonlinearities

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Cesare Dari-Salisburgo1,2, Eugenio DelRe1,2,*, and Elia Palange3,4
1Dipartimento di Fisica, Università dell’Aquila, 67010 L’Aquila, Italy
2Istituto Nazionale Fisica della Materia, Unità di Roma “La Sapienza”, 00185 Rome, Italy
3Dipartimento di Ingegneria Elettrica, Università dell’Aquila, 67040 Monteluco di Roio (L’Aquila), Italy
4Istituto Nazionale Fisica della Materia, Unità dell’Aquila, 67010 L’Aquila, Italy

Received 1 April 2003; published 29 December 2003

The observation of initial time dynamics of self-trapping in photorefractive media indicates that optical spatial solitons supported by intense cumulative nonlinearities manifest temporally nonlocal signatures in the form of stretched exponential behavior. This general result, supported also by numerical predictions, is triggered by wave shaping in a time-constant buildup map, a consequence of the spatially resolved inertial response intrinsic to the geometrical transition from a diffracting to a self-focused beam, inherent to soliton appearance.

© 2003 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.91.263903
DOI:
10.1103/PhysRevLett.91.263903
PACS:
42.65.Tg, 42.65.Sf

*Electronic address: eugenio.delre@aquila.infn.it

 
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