All Outputs (169)

Numerical investigations on nonlinear nonparaxial beam propagation using graphics processing units (2011)
Presentation / Conference
Chamorro-Posada, P., Sánchez-Curto, J., & McDonald, G. (2011, November). Numerical investigations on nonlinear nonparaxial beam propagation using graphics processing units. Presented at 8th Iberian Meeting on Computational Electromagnetics, Sesimbra, Lisbon, Potugal

We study the performance of a nonparaxial beam propagation method accelerated using massively parallel computation in graphic processing units. The implementation is tested in two different NVIDIA hardware architectures, Tesla and Fermi, and the resu... Read More about Numerical investigations on nonlinear nonparaxial beam propagation using graphics processing units.

Giant Goos–Hänchen shifts and radiation-induced trapping of Helmholtz solitons at nonlinear interfaces (2011)
Journal Article
Helmholtz solitons at nonlinear interfaces. Optics Letters, 36(18), 3605-3607. https://doi.org/10.1364/OL.36.003605

Giant Goos–Hänchen shifts and radiation-induced trapping are studied at the planar boundary separating two focusing Kerr media within the framework of the Helmholtz theory. The analysis, valid for all angles of incidence, reveals that interfaces exhi... Read More about Giant Goos–Hänchen shifts and radiation-induced trapping of Helmholtz solitons at nonlinear interfaces.

Optical fractals: characterization, cavities, coherence and connections (2011)
Presentation / Conference
Mcdonald, G., Christian, J., Walsh, T., & Huang, J. (2011, September). Optical fractals: characterization, cavities, coherence and connections. Presented at 11th International Conference on Laser and Fiber Optics Networks Modeling, LFNM'2011, Kharkov, Ukraine

Uniform and regular systems can generate optical fractals. After characterizing different fractal-generating systems, emphasis is placed on the roles of boundary conditions and cavity feedback. New aspects of linear and nonlinear optical fractals are... Read More about Optical fractals: characterization, cavities, coherence and connections.

Scattering of Helmholtz spatial optical solitons at material interfaces (2011)
Presentation / Conference
McCoy, E., Christian, J., & Mcdonald, G. (2011, August). Scattering of Helmholtz spatial optical solitons at material interfaces. Presented at First Annual Student Conference on Complexity Science, Winchester University, UK

The behaviour of light at the interface between different materials essentially defines the entire field of Optics. Indeed, the reflection and refraction properties of plane waves at the boundary between two dissimilar linear dielectrics are analysed... Read More about Scattering of Helmholtz spatial optical solitons at material interfaces.

Spatial solitons and instabilities in two-colour Helmholtz light fields (2011)
Presentation / Conference
Bostock, C., Christian, J., & Mcdonald, G. (2011, August). Spatial solitons and instabilities in two-colour Helmholtz light fields. Presented at First Annual Student Conference on Complexity Science, Winchester University, UK

Two-colour optical beams comprise a pair of light waves at two well-separated temporal frequencies, and which are coupled through system nonlinearity (e.g., the Kerr-type response in the host material of a planar waveguide). In addition to their fund... Read More about Spatial solitons and instabilities in two-colour Helmholtz light fields.

Complexity & fractality in simple optical systems (2011)
Presentation / Conference
Mcdonald, G., Christian, J., Heyes, A., Millington, N., Walsh, T., & Huang, J. (2011, July). Complexity & fractality in simple optical systems. Presented at Waves 2011 - 10th International Conference on Mathematical and Numerical Aspects of Waves, Vancouver, Canada

Complexity draws on commonality of universal phenomena and brings together research in fields that are traditionally quite disparate. A key thematic in the study of complex systems is pattern emergence. Spatial pattern formation can often be categori... Read More about Complexity & fractality in simple optical systems.

A universal nonparaxial refraction law for spatial solitons (2011)
Presentation / Conference
Christian, J., Mcdonald, G., Bostock, C., McCoy, E., Sanchez-Curto, J., & Chamorro-Posada, P. (2011, July). A universal nonparaxial refraction law for spatial solitons. Presented at Waves 2011 - 10th International Conference on Mathematical and Numerical Aspects of Waves, Vancouver, Canada

The interaction of self-localizing and self-stabilizing wavepackets with interfaces is a fundamental nonlinear wave phenomenon. Indeed, interfaces play a crucial role as boundary conditions in a wide class of problem, ranging
from guided-wave optics... Read More about A universal nonparaxial refraction law for spatial solitons.

Pulses with relativistic and pseudo-relativistic aspirations (2011)
Presentation / Conference
Lundie, M., Lancaster, G., Hodgkinson, T., Christian, J., Mcdonald, G., & Chamorro-Posada, P. (2011, July). Pulses with relativistic and pseudo-relativistic aspirations. Presented at Waves 2011 - 10th International Conference on Mathematical and Numerical Aspects of Waves, Vancouver, Canada

Temporal solitons are robust self-localizing pulses that play a pivotal role in modern understandings of nonlinear wave phenomena. Here, we propose a new approach for describing pulses in dispersive nonlinear systems. By retaining the fuller generali... Read More about Pulses with relativistic and pseudo-relativistic aspirations.

White light lasers (2011)
Presentation / Conference
Rose, C., McDonald, G., & Christian, J. (2011, June). White light lasers. Poster presented at SEE Celebration of Research, University of Salford, Greater Manchester, UK

Broadband multiline frequency combs present a wealth of applications, ranging from meteorology, sensing and measurements to those potentially in the domain of attosecond science. We report here on detailed investigations of a novel process that is ac... Read More about White light lasers.

Snell's law for nonlinear beams (2011)
Presentation / Conference
Christian, J., McDonald, G., Sanchez-Curto, J., & Chamorro-Posada, P. (2011, June). Snell's law for nonlinear beams. Poster presented at SEE Celebration of Research, University of Salford, Greater Manchester, UK

The refraction of plane waves at a uniform boundary between dissimilar linear dielectric materials is perhaps one of the oldest and best-understood phenomenon in optics. In contrast, the behaviour of a beam with a finite transverse cross-section is m... Read More about Snell's law for nonlinear beams.

Relativistic effects in non-relativistic systems (2011)
Presentation / Conference
McDonald, G., Christian, J., & Hodgkinson, T. (2011, June). Relativistic effects in non-relativistic systems. Poster presented at SEE Celebration of Research, University of Salford, Greater Manchester, UK

We propose a new model for describing the evolution of scalar optical pulses in Kerr-type planar waveguides and optical fibres. The wave envelope satisfies a dimensionless equation and its solutions are thus endowed with some intriguing and mystical... Read More about Relativistic effects in non-relativistic systems.

Relativistic & pseudo-relativistic connections in optical pulse propagation (2011)
Presentation / Conference
Christian, J., McDonald, G., Lundie, M., & Lancaster, G. (2011, June). Relativistic & pseudo-relativistic connections in optical pulse propagation. Poster presented at College Research Showcase Day, University of Salford, Greater Manchester, UK

We explore a more complete model for describing the evolution of scalar optical pulses in generic nonlinear waveguides. The electromagnetic wave envelope satisfies a dimensionless equation that is of the Helmholtz type. Our
approach is to retain the... Read More about Relativistic & pseudo-relativistic connections in optical pulse propagation.

Cavity-enhanced broadband light generation (2011)
Presentation / Conference
Rose, C., McDonald, G., & Christian, J. (2011, June). Cavity-enhanced broadband light generation. Poster presented at College Research Showcase Day, University of Salford, Greater Manchester, UK

Broadband (multiline frequency) light combs present a wealth of applications, ranging from meteorology, sensing and measurements to those potentially in the domain of
attosecond science. We report here on detailed investigations of, what we believe... Read More about Cavity-enhanced broadband light generation.

The role of boundary conditions in kaleidoscope laser modes (2011)
Presentation / Conference
McDonald, G., Christian, J., & Huang, J. (2011, June). The role of boundary conditions in kaleidoscope laser modes. Poster presented at College Research Showcase Day, University of Salford, Greater Manchester, UK

The complex character of transverse eigenmodes in one-dimensional (1D) unstable cavity lasers has been known for many years [1]. Early collaborations showed that the origin of such fractal (i.e., multiple spatial scale) structure lies in a subtle int... Read More about The role of boundary conditions in kaleidoscope laser modes.

Arbitrary-angle scattering of spatial solitons from dielectric optical interfaces (2011)
Presentation / Conference
McCoy, E., Christian, J., & McDonald, G. (2011, June). Arbitrary-angle scattering of spatial solitons from dielectric optical interfaces. Poster presented at College Research Showcase Day, University of Salford, Greater Manchester, UK

Wave–interface phenomena appear throughout Nature and are intrinsically angular in character. For instance, the behaviour of light waves at material boundaries underpins the entire field of optics. The seminal works on nonlinear
beam refraction [1]... Read More about Arbitrary-angle scattering of spatial solitons from dielectric optical interfaces.

Propagation and stability of two-colour spatial optical solitons (2011)
Presentation / Conference
Bostock, C., Christian, J., & McDonald, G. (2011, June). Propagation and stability of two-colour spatial optical solitons. Presented at College Research Showcase Day, University of Salford, Greater Manchester, UK

Two-colour spatial solitons comprise coupled nonlinear optical beams at two distinct temporal frequencies [1]. The components (which may be bright-like and/or dark-like) are localized in space and tend to overlap, thereby allowing
the interplay betw... Read More about Propagation and stability of two-colour spatial optical solitons.

Research on nonlinear and quantum optics at the photonics and quantum information group of the University of Valladolid (2011)
Journal Article
quantum information group of the University of Valladolid. Optica Pura y Aplicada, 44(2), 211-217

We outline the main research lines in Nonlinear and Quantum Optics of the Group of Photonics and Quantum Information at the University of Valladolid. These works focus on Optical Solitons, Quantum Information using Photonic Technologies and the devel... Read More about Research on nonlinear and quantum optics at the photonics and quantum information group of the University of Valladolid.

Spontaneous spatial fractals: universal contexts and applications (2011)
Presentation / Conference
Mcdonald, G., Christian, J., Heyes, A., Millington, N., Walsh, T., & Huang, J. (2011, May). Spontaneous spatial fractals: universal contexts and applications. Presented at CLEO Europe - EQEC 2011, Munich, Germany

We report on our latest research in the field of spontaneous spatial fractal patterns. New analyses, results and potential applications are reported for nonlinear ring cavities and kaleidoscope laser systems.

Universality in relativistic aspirations of helmholtz soliton pulses (2011)
Presentation / Conference
Lancaster, G., Lundie, M., Hodgkinson, T., Christian, J., & Mcdonald, G. (2011, May). Universality in relativistic aspirations of helmholtz soliton pulses. Presented at CLEO Europe - EQEC 2011, Munich, Germany

We propose a novel nonlinear Helmholtz equation for modelling pulses in optical waveguides. Exact analytical solitons are reported for a wide variety of nonlinearities. Connections to special relativity are explored.

Total non-refraction angle at Kerr defocusing interfaces (2011)
Presentation / Conference
Sánchez-Curto, J., Chamorro-Posada, P., & Mcdonald, G. (2011, February). Total non-refraction angle at Kerr defocusing interfaces. Presented at QUONLOP 2011, Meeting of the Quantum Optics and Nonlinear Optics Committee of SEDOPTICA, University of Valladolid, Spain

Spatial soliton refraction at interfaces separating two nonlinear media has traditionally been studied in terms of the paraxial Nonlinear Schrödinger (NLS) Equation, thus restricting the validity of results to vanishingly small angles of incidence. T... Read More about Total non-refraction angle at Kerr defocusing interfaces.