Spatiotemporal nonlinear optics in arrays of subwavelength waveguides

Gorbach, A. et al. (2010) Spatiotemporal nonlinear optics in arrays of subwavelength waveguides. Physical Review A: Atomic, Molecular and Optical Physics, 82(4), 041802. (doi: 10.1103/PhysRevA.82.041802)

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We report numerical and experimental investigations of spatiotemporal nonlinear optical effects leading to spectral broadening in an array of subwavelength silicon waveguides pumped with infrared femtosecond pulses. Adjusting an input pulse position across the array, we observe different patterns in the output spectra. We explain these observations using a theory of the resonant (Cherenkov) radiation emitted by temporal solitons belonging to different spatial supermodes of the array. We also demonstrate strong nonperturbative coupling of temporal dispersion and discrete diffraction in the subwavelength arrays.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Sorel, Professor Marc and De La Rue, Professor Richard and Samarelli, Mr Antonio
Authors: Gorbach, A., Ding, W., Staines, O., de Nobriga, C., Hobbs, G., Wadsworth, W., Knight, J., Skryabin, D., Samarelli, A., Sorel, M., and De La Rue, R.M.
Subjects:Q Science > QC Physics
College/School:College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
Journal Name:Physical Review A: Atomic, Molecular and Optical Physics
Publisher:American Physical Society
ISSN (Online):1094-1622
Published Online:26 October 2010

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