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Title: Ultrafast tilting of the dispersion of a photonic crystal and adiabatic spectral compression of light pulses
Authors: Beggs, Daryl M.
Krauss, Thomas F.
Kuipers, L.
Kampfrath, Tobias
Keywords: QC Physics
Issue Date: 18-Jan-2012
Citation: Beggs , D M , Krauss , T F , Kuipers , L & Kampfrath , T 2012 , ' Ultrafast tilting of the dispersion of a photonic crystal and adiabatic spectral compression of light pulses ' Physical Review Letters , vol 108 , no. 3 , 033902 , pp. - .
Abstract: We demonstrate, by theory and experiment, the ultrafast tilting of the dispersion curve of a photonic-crystal waveguide following the absorption of a femtosecond pump pulse. By shaping the pump-beam cross section with a nanometric shadow mask, different waveguide eigenmodes acquire different spatial overlap with the perturbing pump, leading to a local flattening of the dispersion by up to 11%. We find that such partial mode perturbation can be used to adiabatically compress the spectrum of a light pulse traveling through the waveguide.
Version: Publisher PDF
Status: Peer reviewed
URI: http://hdl.handle.net/10023/2809
DOI: http://dx.doi.org/10.1103/PhysRevLett.108.033902
ISSN: 0031-9007
Type: Journal article
Rights: © 2012 American Physical Society
Appears in Collections:University of St Andrews Research
Physics & Astronomy Research



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