Soliton propagation in materials with saturable nonlinearity

Gatz, Sebastian; Herrmann, Joachim

doi:10.1364/josab.8.002296

Cited by 210 publications

(121 citation statements)

References 20 publications

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“…The anal yzed nonl i neari ty can b e appro xi mated wi th very hi gh accura cy by satura ti on nonl i neari ty . Thi s typ e of no nl i neari ty i s very well kno wn and observed i n other materi al s [10,11]. The esti m ated val ue of no nl i near refra cti ve i ndex i n ana l yzed wa vegui des i s l arg er tha n i n m any other m ateri al s. The cal cul ated no nl i neari ty corresp onds to tha t obta i ned i n bul k ma teri al s wi th no nl i near refra cti ve i ndex n 2 ¤ 1 0 1 2 m 2 / W .…”

Section: T Ablesupporting

confidence: 76%

Nonlinear Properties of Waveguides with Twisted Nematic Liquid Crystal

Karpierz

2001

Acta Phys. Pol. A

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Facult y of Phy sics, Warsa w U ni versity of T echnolo gy K oszy kowa 75, 00-662 W arszaw a, Polan dOptical reorientational nonli neari ty in tw isted nematic li quid crystallin e planar w aveguide is analyzed theoreticall y. It is shown that optical nonlinearity for guided mo des in analyzed w aveguides can be appro ximated by saturation nonlin earity . Predicted nonlinear ity is large enough to observe e˜ects like spatial solitons formation with milliw atts of light pow er.PAC S numb ers: 42. 65. Wi, 42. 70.Df 1. I n t r o d u ct io n L iq ui d cr yst al s p ossess m any uni que physi cal , opti cal , a nd el ectro -opti cal pro perti es whi ch cause tha t they are i mp orta nt m ateri al s i n num erous techni cal appl i cati ons and they are very i nteresti n g medi um for ma ny i nv esti gati ons i n ba sic research. In the nemati c pha se, the correl ati on among l i qui d crysta l l i ne m ol ecules i s very stro ng b ecause of the hi gh ani sotro py and the col l ecti ve beha vi or of the m ol ecules. Thi s i s responsibl e for the fact tha t l iqui d crysta l m ol ecules can easil y reo ri ent even wi th a very l ow appl i ed Ùel d. The mol ecular reori enta ti on due to i ntera cti on wi th the el ectri c Ùeld of the l ight wa ve m odi Ùes the l ocal bi refri ngence axi s of l i qui d crysta l and it i s the basis of the opti cal reo ri enta ti onal nonl i near-

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Section: T Ablesupporting

confidence: 76%

Nonlinear Properties of Waveguides with Twisted Nematic Liquid Crystal

Karpierz

2001

Acta Phys. Pol. A

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“…The forms of the nonlinear coefficients (13)- (14) suggests that properties of obtained solitons are similar to solitons in saturable nonlinearity (like photorefractive screening solitons) [16]. In fact, the set of equations is different than usually analysed but generally, they are vectorial solitons in anisotropic medium with the anisotropic saturation-like nonlinearity.…”

Section: Solitons In Liquid Crystalline Waveguidesmentioning

confidence: 99%

Spatial Solitons in Liquid Crystals

Karpierz

2001

Soliton-Driven Photonics

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Reorientational phenomenon in liquid crystals is unique for nonlinear optics applications. Recently there have been shown that the reorientational nonlinearity in nematic liquid crystals can govern spatial solitons in both waveguide and bulk geometry. Such solitons require a few milliwats of light power and they can be controlled by the state of light polarisation or an external electric field. In this paper, the theoretical analysis and experimental results on optical solitons in nematic liquid crystals due to the reorientational nonlinearity are reviewed. The discussion of their properties is preceded by a brief introduction to nonlinear optics of liquid crystals.

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“…The class of DNSE models with saturable nonlinearity is also of particular interest in their own right, due to a feature first unveiled in [17]. In this study, we focus on the so-called DNSE with a saturable nonlinearity [18,19] i ∂ψ n…”

Section: Introductionmentioning

confidence: 99%