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Your search keyword '"Tristram, J."' showing total 8 results
Start Over Author "Tristram, J." Publisher optical society of america
8 results on '"Tristram, J."'

1. Multivortex solitons in triangular photonic lattices

Author

Alexander, Tristram J., Desyatnikov, Anton S., Kivshar, Yuri, Alexander, Tristram J., Desyatnikov, Anton S., and Kivshar, Yuri

Abstract

We introduce a novel class of stable lattice solitons with a complex phase structure composed of many single-charge discrete vortices in a triangular photonic lattice. We demonstrate that such nonlinear self-trapped states are linked to the resonant Bloch modes, which bear a honeycomb pattern of phase dislocations.

Published
2007

2. Discrete Vortex Clusters in Triangular Photonic Lattices

Author

Alexander, Tristram J, Desyatnikov, Anton S, Kivshar, Yuri, Alexander, Tristram J, Desyatnikov, Anton S, and Kivshar, Yuri

Abstract

We describe clusters of discrete vortex solitons in triangular photonic lattices and demonstrate that periodic potentials with three-fold symmetry provide stabilization of novel topological states due to a balance of energy flow.

Published
2006

3. Nonlinear Optics

Author

Fleischer, Jason W., Bartal, Guy, Alexander, Tristram J., Cohen, Oren, Ostrovskaya, Elena, Manela, Ofer, Martin, Hector, Hudock, Jared, Makasyuk, Igor, Chen, Zhigang, Christodoulides, Demetrios N., Segev, Mordechai, Meier, J., Stegeman, G. I., Christodoulides, D. N., Silberberg, Y., Morandotti, R., Yang, H., Salamo, G., Sorel, M., Aitchison, J. S., Kang, Hoonsoo, Zhu, Yifu, Kivshar, Yuri, Neshev, Dragomir, Fleischer, Jason W., Bartal, Guy, Alexander, Tristram J., Cohen, Oren, Ostrovskaya, Elena, Manela, Ofer, Martin, Hector, Hudock, Jared, Makasyuk, Igor, Chen, Zhigang, Christodoulides, Demetrios N., Segev, Mordechai, Meier, J., Stegeman, G. I., Christodoulides, D. N., Silberberg, Y., Morandotti, R., Yang, H., Salamo, G., Sorel, M., Aitchison, J. S., Kang, Hoonsoo, Zhu, Yifu, Kivshar, Yuri, and Neshev, Dragomir

Abstract

The analysis of on-site and off-site vortex lattice solitons in nonlinear waveguide arrays is discussed. The vortex-ring solitons are generic to nonlinear lattices in two dimensions and are the building blocks for more extended and complex wave structures. The vortex beam diffracts across the crystal at low density. It was concluded that the nonlinear optics would be used in nonlinear fiber bundles, photonic crystal fibers and Bose-Einstein condensates.

Published
2004

4. Observation of Discrete Vortex Solitons

Author

Neshev, Dragomir, Alexander, Tristram J, Martin, Hector, Chen, Zhanghai H, Ostrovskaya, Elena, Kivshar, Yuri, Neshev, Dragomir, Alexander, Tristram J, Martin, Hector, Chen, Zhanghai H, Ostrovskaya, Elena, and Kivshar, Yuri

Published
2004

5. Photonics in Optically-induced Lattices

Author

Neshev, Dragomir, Alexander, Tristram J, Hanna, Brendan, Martin, Hector, Chen, Zhanghai H, Krolikowski, Wieslaw, Ostrovskaya, Elena, Sukhorukov, Andrey, Kivshar, Yuri, Neshev, Dragomir, Alexander, Tristram J, Hanna, Brendan, Martin, Hector, Chen, Zhanghai H, Krolikowski, Wieslaw, Ostrovskaya, Elena, Sukhorukov, Andrey, and Kivshar, Yuri

Abstract

We overview our results on nonlinear photonics in optically-induced one- and two-dimensional lattices, including Bragg scattering, Bloch-wave interaction, formation of gap and vortex solitons.

Published
2004

7. Linear and nonlinear waveguides induced by optical vortex solitons

Author

Carlsson, Andreas, Malmberg, Johan, Anderson, D L, Lisak, Mietek, Alexander, Tristram J, Ostrovskaya, Elena, Kivshar, Yuri, Carlsson, Andreas, Malmberg, Johan, Anderson, D L, Lisak, Mietek, Alexander, Tristram J, Ostrovskaya, Elena, and Kivshar, Yuri

Abstract

We study, numerically and analytically, linear and nonlinear waveguides induced by optical vortex solitons in a Kerr medium. Both fundamental and first-order guided modes are analyzed, as well as cases of effective defocusing and focusing nonlinearity.

Published
2000

8. Spatial Optical Solitons Resulting from Multistep Cascading

Author

Alexander, Tristram J, Saltiel, Solomon M, Kivshar, Yuri, Alexander, Tristram J, Saltiel, Solomon M, and Kivshar, Yuri

Abstract

A category of parametric spatial solitons was created through multistep cascading. Parametric spatial solitons which are supported by second-harmonic generation (SHG) and at the same time sum-frequency mixing (SFM) were subjected to a SFM process-generated third wave. This third-wave prompted alterations in the parametric spatial solitons general properties and stability, making them significantly different from their forerunners. The introduction of a third wave also prompted the creation of a quasi-solitons that appear for a negative mismatch of the SFM process.

Published
1999

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