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1

Magnetooptics in Layered Nonlinear Structures

100%

Boardman A., Xie M.

Acta Physica Polonica A

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2003

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vol. 103

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issue 2-3

121-131

EN

The magnetooptics of an asymmetric layered waveguide structure is discussed to investigate the possibility of creating new devices that combine both nonreciprocity and nonlinearity. After addressing some fundamental magnetooptic properties and the kind of materials needed, a straightforward envelope theory is given that exploits the Voigt effect instead of the more obvious Faraday effect. It is emphasised that this choice leads to desirable design features. It is proposed that the introduction of an applied magnetic field to a waveguide structure can be achieved through the use of thin current-carrying strips. It is emphasised that the strips can be arranged to any degree of complexity and that a high degree of control over spatial soliton dynamics can be achieved. Spatial soliton light beams are selected because they can be generated, within a waveguide, in a stable form. The attractive features of using the type of magnetooptic waveguide investigated here are highlighted with examples and it is concluded that the formats proposed can be used for the fully integrated isolator capacity that modern laser systems demand.

2

Applied Magnetooptic Soliton Dynamics: TM and TE-TM-Driven Systems

81%

Boardman A., Xie K., Xie M.

Acta Physica Polonica A

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2001

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vol. 99

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issue 1

7-16

EN

Ideas concerning the use of magnetooptic materials to control spatial solitons are introduced. It is shown that control of spatial solitons can be achieved through the use of TM modes TE-TM interactions. Potential functions can be defined through a Lagrangian analysis and optimisation is possible to facilitate energy transfer between TE and TM waves.

3

Dynamics of χ^{(2)} Solitary Waves: a Multiple Scales Approach

81%

Boardman A., Bontemps P., Xie K., Zharov A.

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vol. 95

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issue 5

705-718

EN

The dynamics of solitary waves in second-order nonlinear materials are discussed using a multiple scales model. After making some comments on the applicability of other perturbation techniques the multiple scales approach is developed with a view to setting up a line of approach that, in principle, permits radiative effects to be modelled. After a closure condition is applied, equations for the evolution of dynamical variables are developed. Applications of these equations to loss and interactions are presented together with confirmation from numerical simulations. It is emphasised that the method is capable of extension to higher-order perturbations and, hence, into the solitary wave fusion region. The established interpretation of quasi-phase-matching fluctuations as loss is discussed and the simple problems of soliton (solitary wave) pair interactions in both loss-free and lossy media are analysed.

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3 Acta Physica Polonica A

1 2003

1 2001

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3 Boardman A.

2 Xie K.

2 Xie M.

1 Bontemps P.

1 Zharov A.

Magnetooptics in Layered Nonlinear Structures

Applied Magnetooptic Soliton Dynamics: TM and TE-TM-Driven Systems

Dynamics of χ^{(2)} Solitary Waves: a Multiple Scales Approach