Self-Induced Mode Transformation in Nonlocal Nonlinear Media

Izdebskaya, Yana V.; Desyatnikov, Anton S.; Kivshar, Yuri S.

doi:10.1103/physrevlett.111.123902

Cited by 62 publications

(17 citation statements)

References 39 publications

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“…In its numerical implementation, it is an ideal tool for the assessment of experimental results when investigating spatial optical solitons in (self-focusing) highly nonlocal media (including, e.g., thermal, reorientational, and liquid crystalline materials), including higher-order solitons [51,52].…”

Section: Discussionmentioning

confidence: 99%

Spatial optical solitons in highly nonlocal media

Alberucci¹,

Jisha²,

Smyth³

et al. 2015

Phys. Rev. A

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We theoretically investigate the propagation of bright spatial solitary waves in highly nonlocal media possessing radial symmetry in a three-dimensional cylindrical geometry. Focusing on a thermal nonlinearity, modeled by a Poisson equation, we show how the profile of the light-induced waveguide strongly depends on the extension of the nonlinear medium in the propagation direction as compared to the beamwidth. We demonstrate that self-trapped beams undergo oscillations in size, either periodically or aperiodically, depending on the input waist and power. The-usually neglected-role of the longitudinal nonlocality as well as the detrimental effect of absorptive losses are addressed.

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Section: Discussionmentioning

confidence: 99%

Spatial optical solitons in highly nonlocal media

Alberucci¹,

Jisha²,

Smyth³

et al. 2015

Phys. Rev. A

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“…In recent years, the shape-variant optical beams in NNM have also received intensive attention (Zhang, 2016). Also, some unique characteristics are revealed, such as self-induced mode transformation (Izdebskaya et al, 2013) power variationinduced three-dimensional non-uniform scaling (Lu et al, 2013). It is well known that Gaussian beams represent a realistic model for the description of the field of laser modes of many laser systems.…”

Section: Special Conference Edition November 2018mentioning

confidence: 99%

Gaussian beam divergence using paraxial approximation

Busari¹,

Kashimbila²,

Busari³

et al. 2019

Bayero J. Pure App. Sci.

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Gaussian beam intensity follows a normal distribution curve in free space. As it propagates, the divergence and the width increase with distance. Using paraxial approximation, the effect of the distance on the intensity, width, radius of curvature and divergence was investigated. Matlab software was used for characteristics parameters calculation. The divergence angle range (26.67 4mm, and compared with the divergence angle range (43 for the distance between 3mm and 4.5mm. The result obtained in this work indicates smaller angles of divergence that can produce a better beam quality and intensity. Finally, this will serve as a great importance for application such as pointing, free space optical communication etc. Keyword: Gaussian beam, Paraxial approximation, Beam divergence, Normal distributio curve.Recently, free-space optical (FSO) systems are competitively being installed as broad band access communication links. Depending on the application, a laser beam with a different shape may have favorable characteristics over a , November, 2018Gaussian beam intensity follows a normal distribution curve in free space . As it propagates, the divergence and the width increase with distance. Using paraxial approximation, the distance on the intensity, width, radius of curvature and divergence was investigated. Matlab software was used for characteristics parameters calculation. The divergence angle range (26.67 0 35.85 0 ) was obtained at a distance between 3mm and 4mm, and compared with the divergence angle range (43 0 53 0 ) obtained experimentally for the distance between 3mm and 4.5mm. The result obtained in this work indicates smaller hat can produce a better beam quality and intensity. Finally, this will serve as a great importance for application such as pointing, free space optical

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“…Particularly intriguing is the role of spatial nonlocality. Indeed, if disorder induces exponential localizations and reduces the interactions of distant modes, nonlocality (i.e., a nonlinear perturbation that extends far beyond the region of interaction) is expected to create some action at a distance dependent on power.Despite some theoretical investigations [14], AL with highly nonlocal nonlinearity was never experimentally investigated before; here we report on the experimental investigation of light localization in a 2D disordered fiber with a nonlinearity of thermal origin, which is known to be highly nonlocal [18][19][20][21][22][23][24]. We show that many exponentially localized states can be simultaneously excited by a broadband laser beam.…”

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confidence: 95%

Observation of Migrating Transverse Anderson Localizations of Light in Nonlocal Media

et al. 2014

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We report the experimental observation of the interaction and attraction of many localized modes in a two-dimensional system realized by a disordered optical fiber supporting transverse Anderson localization. We show that a nonlocal optically nonlinear response of thermal origin alters the localization length by an amount determined by the optical power and also induces an action at a distance between the localized modes and their spatial migration. Evidence of a collective and strongly interacting regime is given.

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Self-Induced Mode Transformation in Nonlocal Nonlinear Media

Cited by 62 publications

References 39 publications

Spatial optical solitons in highly nonlocal media

Spatial optical solitons in highly nonlocal media

Gaussian beam divergence using paraxial approximation

Observation of Migrating Transverse Anderson Localizations of Light in Nonlocal Media

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