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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 10, Iss. 25 — Dec. 16, 2002
  • pp: 1491–1496

Energy storage in superluminal barrier tunneling: Origin of the “Hartman effect”

Herbert G. Winful  »View Author Affiliations


Optics Express, Vol. 10, Issue 25, pp. 1491-1496 (2002)
http://dx.doi.org/10.1364/OE.10.001491


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Abstract

We show that the anomalously short delay times observed in barrier tunneling have their origin in energy storage and its subsequent release. The observed group delay is proportional to the energy stored. This delay is not a propagation delay and should not be linked to a velocity since evanescent waves do not propagate. The “Hartman effect”, in which the group delay becomes independent of thickness for opaque barriers, is shown to be a consequence of the saturation of stored energy with barrier length.

© 2002 Optical Society of America

OCIS Codes
(230.1480) Optical devices : Bragg reflectors
(240.7040) Optics at surfaces : Tunneling
(260.2110) Physical optics : Electromagnetic optics
(260.2160) Physical optics : Energy transfer
(350.2460) Other areas of optics : Filters, interference

ToC Category:
Research Papers

History
Original Manuscript: December 2, 2002
Revised Manuscript: December 7, 2002
Published: December 16, 2002

Citation
Herbert Winful, "Energy storage in superluminal barrier tunneling: Origin of the Hartman effect," Opt. Express 10, 1491-1496 (2002)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-10-25-1491


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