dorsal/arxiv
View SchemaPolarisation Patterns and Vectorial Defects in Type II Optical Parametric Oscillators
| Authors | M. Santagiustina, E. Hernandez-Garcia, M. San Miguel, A. J. Scroggie, G. -L. Oppo |
|---|---|
| Categories | |
| ArXiv ID | physics/0111023 |
| URL | https://arxiv.org/abs/physics/0111023 |
| DOI | 10.1103/PhysRevE.65.036610 |
| Journal | Physical Review E 65, 036610 (2002) |
Abstract
Previous studies of lasers and nonlinear resonators have revealed that the polarisation degree of freedom allows for the formation of polarisation patterns and novel localized structures, such as vectorial defects. Type II optical parametric oscillators are characterised by the fact that the down-converted beams are emitted in orthogonal polarisations. In this paper we show the results of the study of pattern and defect formation and dynamics in a Type II degenerate optical parametric oscillator for which the pump field is not resonated in the cavity. We find that traveling waves are the predominant solutions and that the defects are vectorial dislocations which appear at the boundaries of the regions where traveling waves of different phase or wave-vector orientation are formed. A dislocation is defined by two topological charges, one associated with the phase and another with the wave-vector orientation. We also show how to stabilize a single defect in a realistic experimental situation. The effects of phase mismatch of nonlinear interaction are finally considered.
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"abstract": "Previous studies of lasers and nonlinear resonators have revealed that the\npolarisation degree of freedom allows for the formation of polarisation\npatterns and novel localized structures, such as vectorial defects. Type II\noptical parametric oscillators are characterised by the fact that the\ndown-converted beams are emitted in orthogonal polarisations. In this paper we\nshow the results of the study of pattern and defect formation and dynamics in a\nType II degenerate optical parametric oscillator for which the pump field is\nnot resonated in the cavity. We find that traveling waves are the predominant\nsolutions and that the defects are vectorial dislocations which appear at the\nboundaries of the regions where traveling waves of different phase or\nwave-vector orientation are formed. A dislocation is defined by two topological\ncharges, one associated with the phase and another with the wave-vector\norientation. We also show how to stabilize a single defect in a realistic\nexperimental situation. The effects of phase mismatch of nonlinear interaction\nare finally considered.",
"arxiv_id": "physics/0111023",
"authors": [
"M. Santagiustina",
"E. Hernandez-Garcia",
"M. San Miguel",
"A. J. Scroggie",
"G. -L. Oppo"
],
"categories": [
"physics.optics",
"nlin.PS"
],
"doi": "10.1103/PhysRevE.65.036610",
"journal_ref": "Physical Review E 65, 036610 (2002)",
"title": "Polarisation Patterns and Vectorial Defects in Type II Optical Parametric Oscillators",
"url": "https://arxiv.org/abs/physics/0111023"
},
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