Report

Tracking Femtosecond Laser Pulses in Space and Time

Science  02 Nov 2001:
Vol. 294, Issue 5544, pp. 1080-1082
DOI: 10.1126/science.1065163

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Abstract

We show that the propagation of a femtosecond laser pulse inside a photonic structure can be directly visualized and tracked as it propagates using a time-resolved photon scanning tunneling microscope. From the time-dependent and phase-sensitive measurements, both the group velocity and the phase velocity are unambiguously and simultaneously determined. It is expected that this technique will find applications in the investigation of the local dynamic behavior of photonic crystals and integrated optical circuits.

  • * These authors contributed equally to this work.

  • To whom correspondence should be addressed. E-mail: N.F.vanHulst{at}tn.utwente.nl

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