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Optics Letters

Optics Letters


  • Vol. 21, Iss. 14 — Jul. 15, 1996
  • pp: 1046–1048

Screening of the bias field in terahertz generation from photoconductors

G. Rodriguez and A. J. Taylor  »View Author Affiliations

Optics Letters, Vol. 21, Issue 14, pp. 1046-1048 (1996)

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We include screening of the bias field by the space charge induced by carrier transport and by the generated terahertz radiation in a model describing the far-field electromagnetic radiation from a large-aperture biased photoconductor triggered by an ultrashort optical pulse. At high fluences, space-charge screening is shown to produce bipolar terahertz waveforms. However, the dominant saturation mechanism is screening of the bias field by the radiated terahertz field.

© 1996 Optical Society of America

Original Manuscript: January 16, 1996
Published: July 15, 1996

G. Rodriguez and A. J. Taylor, "Screening of the bias field in terahertz generation from photoconductors," Opt. Lett. 21, 1046-1048 (1996)

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