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Journal of the Optical Society of America A

Journal of the Optical Society of America A


  • Vol. 16, Iss. 8 — Aug. 1, 1999
  • pp: 2025–2028

Spatiotemporal focusing of single-cycle light pulses

S. Hunsche, S. Feng, H. G. Winful, A. Leitenstorfer, M. C. Nuss, and E. P. Ippen  »View Author Affiliations

JOSA A, Vol. 16, Issue 8, pp. 2025-2028 (1999)

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We investigate experimentally and numerically the properties of single-cycle terahertz pulses propagating through a focus. The experimental data clearly show changes in pulse shape resulting from the Gouy phase shift and apparent superluminal pulse propagation. The pulses are also considerably distorted by diffraction effects. A solution of the time-domain diffraction integral is necessary to explain the details of the data and leads to an excellent agreement between experiment and theory.

© 1999 Optical Society of America

OCIS Codes
(320.5540) Ultrafast optics : Pulse shaping
(350.5500) Other areas of optics : Propagation

Original Manuscript: March 8, 1999
Manuscript Accepted: April 1, 1999
Published: August 1, 1999

S. Hunsche, S. Feng, H. G. Winful, A. Leitenstorfer, M. C. Nuss, and E. P. Ippen, "Spatiotemporal focusing of single-cycle light pulses," J. Opt. Soc. Am. A 16, 2025-2028 (1999)

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  13. The ripples after the main pulse at z=0 in the time-domain data and the dips in the spectra at z=0 may arise from interference with scattered light. This possibility is included in the simulations by addition of a small contribution of background light treated as a plane wave. Without this additional contribution, the simulated data show no ripples or dips.

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