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Ultrafast tilting of the dispersion of a photonic crystal and adiabatic spectral compression of light pulses

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BeggsPhysRevLettUltrafastTiltingOfTheDispersion2012.pdf (511.3Kb)
Date
18/01/2012
Author
Beggs, Daryl M.
Krauss, Thomas F.
Kuipers, L.
Kampfrath, Tobias
Funder
European Commission
EPSRC
Grant ID
IST-FP6-033651
EP/F001622/1
Keywords
QC Physics
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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.
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. - . https://doi.org/10.1103/PhysRevLett.108.033902
Publication
Physical Review Letters
Status
Peer reviewed
DOI
https://doi.org/10.1103/PhysRevLett.108.033902
ISSN
0031-9007
Type
Journal article
Rights
© 2012 American Physical Society
Collections
  • University of St Andrews Research
URI
http://hdl.handle.net/10023/2809

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