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Optics Letters

Optics Letters


  • Vol. 26, Iss. 23 — Dec. 1, 2001
  • pp: 1900–1902

Incidence-angle selection and spatial reshaping of terahertz pulses in optical tunneling

M. T. Reiten, K. McClatchey, D. Grischkowsky, and R. A. Cheville  »View Author Affiliations

Optics Letters, Vol. 26, Issue 23, pp. 1900-1902 (2001)

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We present spatially resolved measurements of the electric field of terahertz pulses undergoing optical tunneling that show strong pulse reshaping in both time and space. This reshaping is shown to be a result of frequency and incidence-angle filtering of the complex amplitude of the plane-wave basis set that makes up the pulse. This filtering leads to spreading of the pulse in the time and space dimensions, as expected from linear dispersion theory. Measurement of the pulse shape after transmission through an optical tunneling barrier permits direct determination of the complex system transfer function in two dimensions. The transfer function, measured over both thin and thick barrier limits, contains a complete description of the tunneling barrier system from which the phase and loss times can be directly determined.

© 2001 Optical Society of America

OCIS Codes
(070.6110) Fourier optics and signal processing : Spatial filtering
(260.6970) Physical optics : Total internal reflection
(320.5540) Ultrafast optics : Pulse shaping
(320.7150) Ultrafast optics : Ultrafast spectroscopy

M. T. Reiten, K. McClatchey, D. Grischkowsky, and R. A. Cheville, "Incidence-angle selection and spatial reshaping of terahertz pulses in optical tunneling," Opt. Lett. 26, 1900-1902 (2001)

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