Real-Space Observation of Ultraslow Light in Photonic Crystal Waveguides

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Gersen, H. and Karle, T.J. and Engelen, R.J.P. and Bogaerts, W. and Korterik, J.P. and Hulst, N.F. van and Krauss, T.F. and Kuipers, L. (2005) Real-Space Observation of Ultraslow Light in Photonic Crystal Waveguides. Physical Review Letters, 94 (7). 073903-1. ISSN 0031-9007

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Abstract:We show the real-space observation of fast and slow pulses propagating inside a photonic crystal waveguide by time-resolved near-field scanning optical microscopy. Local phase and group velocities of modes are measured. For a specific optical frequency we observe a localized pattern associated with a flat band in the dispersion diagram. During at least 3 ps, movement of this field is hardly discernible: its group velocity would be at most c/1000. The huge trapping times without the use of a cavity reveal new perspectives for dispersion and time control within photonic crystals.
Item Type:Article
Copyright:© 2005 The American Physical Society
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Link to this item:http://purl.utwente.nl/publications/50957
Official URL:http://dx.doi.org/10.1103/PhysRevLett.94.073903
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Metis ID: 223779