Real-space observation of ultraslow light in photonic crystal waveguides

H  Gersen; T J  Karle; R J P  Engelen; W  Bogaerts; J P  Korterik; N F  van Hulst; T F  Krauss; L  Kuipers

doi:10.1103/PhysRevLett.94.073903

Real-space observation of ultraslow light in photonic crystal waveguides

H Gersen, T J Karle, R J P Engelen, W Bogaerts, J P Korterik, N F van Hulst, T F Krauss, L Kuipers

Research output: Contribution to journal › Article › peer-review

513 Citations (Scopus)

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.

Original language	English
Pages (from-to)	073903
Number of pages	4
Journal	Physical Review Letters
Volume	94
Issue number	7
DOIs	https://doi.org/10.1103/PhysRevLett.94.073903
Publication status	Published - 25 Feb 2005

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10.1103/PhysRevLett.94.073903

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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.",

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AU - Gersen, H

AU - Karle, T J

AU - Engelen, R J P

AU - Bogaerts, W

AU - Korterik, J P

AU - van Hulst, N F

AU - Krauss, T F

AU - Kuipers, L

PY - 2005/2/25

Y1 - 2005/2/25

N2 - 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.

AB - 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.

KW - LASER

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M3 - Article

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VL - 94

SP - 073903

JO - Physical Review Letters

JF - Physical Review Letters

IS - 7

ER -

Real-space observation of ultraslow light in photonic crystal waveguides

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