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- Nematicon abstract "In optics, a nematicon is a spatial soliton in nematic liquid crystals (NLC). The name was invented in 2003 by G. Assanto. and used thereafter Nematicons are generated by a special type of optical nonlinearity present in NLC: the light induced reorientation of the molecular director (i.e. the average molecular orientation). This nonlinearity arises from the fact that the molecular director (i.e., the optic axis of the corresponding uniaxial) tends to align along the electric field of light. Nematicons are easy to generate (with mW optical power or less ) because the NLC dielectric medium exhibits the following properties: A very large nonlinear response : the effective nonlinearity is typically eight orders of magnitude larger than that of carbon disulfide. This means that much lower optical powers are necessary to obtain the same refractive index variation (increase) or self-focusing to balance out diffraction. A nonlocal response : the nonlinear response is not limited to the location of the optical field. Instead the response profile is wider than the light beam. A high nonlocality allows for stable soliton propagation even in the case of two transverse dimensions. Higher or lower powers than the exact value required for a soliton to exist lead to breathing solitons. A saturable all-optical response: the director of the liquid crystal tends to align along the electric field of the light beam. For powerful beams the molecular director becomes parallel to the field and no further reorientation is possible. Response saturation also stabilizes two-dimensional solitons.Since the reorientational optical nonlinearity of nematic liquid crystals is accompanied by an electro-optic response to low-frequency electric fields, i.e. applied voltages, nematicons and the associated waveguides can be steered in angle and routed in space by the application of an external bias, leading to reconfigurable interconnects.In waveguide arrays where discrete solitons are knows to form, discrete nematicons have also been demonstrated".
- Nematicon thumbnail Nonlocality_optical.png?width=300.
- Nematicon wikiPageExternalLink soliton.php.
- Nematicon wikiPageID "23860421".
- Nematicon wikiPageRevisionID "598762958".
- Nematicon hasPhotoCollection Nematicon.
- Nematicon subject Category:Liquid_crystals.
- Nematicon subject Category:Nonlinear_optics.
- Nematicon subject Category:Solitons.
- Nematicon type BodyPart105220461.
- Nematicon type Eye105311054.
- Nematicon type Fluid114939445.
- Nematicon type Liquid114940100.
- Nematicon type LiquidCrystal114941087.
- Nematicon type LiquidCrystals.
- Nematicon type Matter100020827.
- Nematicon type NonlinearOptics.
- Nematicon type Organ105297523.
- Nematicon type Part109385911.
- Nematicon type PhysicalEntity100001930.
- Nematicon type SenseOrgan105299178.
- Nematicon type Thing100002452.
- Nematicon comment "In optics, a nematicon is a spatial soliton in nematic liquid crystals (NLC). The name was invented in 2003 by G. Assanto. and used thereafter Nematicons are generated by a special type of optical nonlinearity present in NLC: the light induced reorientation of the molecular director (i.e. the average molecular orientation). This nonlinearity arises from the fact that the molecular director (i.e., the optic axis of the corresponding uniaxial) tends to align along the electric field of light.".
- Nematicon label "Nematicon".
- Nematicon sameAs m.076w870.
- Nematicon sameAs Q6990992.
- Nematicon sameAs Q6990992.
- Nematicon sameAs Nematicon.
- Nematicon wasDerivedFrom Nematicon?oldid=598762958.
- Nematicon depiction Nonlocality_optical.png.
- Nematicon isPrimaryTopicOf Nematicon.
