Spatiotemporal nonlinear optics in arrays of subwavelength waveguides
Gorbach, A. V., Ding, W., Staines, O. K., De Nobriga, C. E., Hobbs, G. D., Wadsworth, W. J., Knight, J. C., Skryabin, D. V., Samarelli, A., Sorel, M. and De La Rue, R. M., 2010. Spatiotemporal nonlinear optics in arrays of subwavelength waveguides. Physical Review A: Atomic, Molecular, and Optical Physics, 82 (4), 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.
|Creators||Gorbach, A. V., Ding, W., Staines, O. K., De Nobriga, C. E., Hobbs, G. D., Wadsworth, W. J., Knight, J. C., Skryabin, D. V., Samarelli, A., Sorel, M. and De La Rue, R. M.|
|Departments||Faculty of Science > Physics|
|Research Centres||Centre for Photonics and Photonic Materials|
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