Spatial Solitons in Liquid Crystals

Karpierz, Mirosław A.

doi:10.1007/978-94-010-0682-8_3

Cited by 13 publications

(3 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Owing to the guiding properties of the light-induced index channels and the NLC sensitivity to stimuli, nematicons have been employed as waveguides for co-polarized signals of different wavelengths, to be switched and steered by way of electric or magnetic fields [ 11 , 12 , 13 , 14 , 15 , 16 ], extra self-confined beams or refractive index perturbations [ 17 , 18 , 19 , 20 , 21 ], even self-induced changes in director distribution [ 22 , 23 , 24 ]. In this framework, nematicons are candidates for novel generations of electro-optic and all-optical devices based on or controlled by self-induced waveguides [ 25 , 26 , 27 , 28 ], including cavity-less lasers [ 29 , 30 ].…”

Section: Introductionmentioning

confidence: 99%

Interplay of Thermo-Optic and Reorientational Responses in Nematicon Generation

et al. 2018

View full text Add to dashboard Cite

Employing several nematic liquid crystal mixtures, we investigate how the thermo-optic response of nonlinear birefringent soft-matter affects the propagation of light beams and the features of self-induced waveguides. We address the formation of optical spatial solitons and the control of their trajectories versus temperature, comparing the measurements with the expectations based on a simplified model, showing an excellent agreement. Moreover, in a guest–host mixture with an absorbing dye dopant, we study the competition between reorientational and thermal nonlinearities, demonstrating that the two processes can be adjusted independently in order to tune the soliton properties, i.e., trajectory and confinement strength. Our results are an important contribution to better comprehend the role played by material properties on linear and nonlinear beam propagation, as well as their exploitation for signal processing and addressing.

show abstract

Section: Introductionmentioning

confidence: 99%

Interplay of Thermo-Optic and Reorientational Responses in Nematicon Generation

et al. 2018

View full text Add to dashboard Cite

show abstract

“…4,5 Recently they have been observed in nematic liquid crystals (NLCs) as a result of either thermal effects 6 or optical field-induced molecular reorientation. 7,8 In the latter case only a few milliwatts of light power are needed, and the propagation length can be as high as a centimeter, which is potentially interesting for applications. 9,10 Beyond this applied interest, however, the study of such narrow solitonlike beams generated via the molecular reorientation of NLCs-also called "nematicons"-led to a renewed fundamental interest in the field of SOSs.…”

Section: Introductionmentioning

confidence: 99%

Measurement of the self-induced waveguide of a solitonlike optical beam in a nematic liquid crystal

et al. 2005

View full text Add to dashboard Cite

Using phase-measurement interferometry, we observe the waveguide induced by a solitonlike optical beam sustained by the molecular reorientation-induced optical nonlinearity of a nematic liquid crystal in planar configuration. Our purpose in the study is to characterize the nonlocality of the optical response of nematic liquid crystals. A good agreement is obtained between the experiment and a full ͑2+1͒-dimensional numerical simulation of the nonlinear optical beam propagation in the cell.

show abstract

“…Reorientational nonlinearity in nematics is a source of various phenomena [1,2], among others creation spatial solitons, called as nematicons [3]. Nematicons were observed in different geometries and configurations of nematic medium [4][5][6][7][8]. It was proved, that light beams with the power of order of few milliwats can form nematicons at the distance of few millimeters.…”

Section: Introductionmentioning

confidence: 98%

Self-focusing of light beam in twisted nematic waveguide

et al. 2005

View full text Add to dashboard Cite

In this work we investigate light beam propagation in twisted nematic liquid crystalline film. In the linear case (for low power of the light beam) the diffraction and walk-off of the light beam is observed. Due to the optical reorientation nonlinearity light beam is self-focusing and finally spatial solitary wave is created. The direction of light beam propagation is also changing with increasing the nonlinear effect. The samples were filled with 6CHBT nematic liquid crystals and we measured the propagation of light beam at the distance of few millimeters. Nonlinear self-focusing was observed for a light power of order of few tenths of milliwats. The experimental results are in a good agreement with theoretical predictions and numerical simulation. The proposed configuration of our cell can be applied to switching of the light beam in low-power all-optical systems.

show abstract

Spatial Solitons in Liquid Crystals

Cited by 13 publications

References 17 publications

Interplay of Thermo-Optic and Reorientational Responses in Nematicon Generation

Interplay of Thermo-Optic and Reorientational Responses in Nematicon Generation

Measurement of the self-induced waveguide of a solitonlike optical beam in a nematic liquid crystal

Self-focusing of light beam in twisted nematic waveguide

Contact Info

Product

Resources

About