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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 19, Iss. 23 — Dec. 1, 1994
  • pp: 1994–1996

Modeling of terahertz radiation from biased photoconductors: transient velocity effects

G. Rodriguez, S. R. Caceres, and A. J. Taylor  »View Author Affiliations


Optics Letters, Vol. 19, Issue 23, pp. 1994-1996 (1994)
http://dx.doi.org/10.1364/OL.19.001994


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Abstract

We include transient carrier velocity dynamics in a model describing the terahertz radiation from a large-aperture, biased photoconductor triggered by an ultrashort optical pulse. Waveforms of the radiated electric field are calculated as a function of optical excitation fluence and bias field. The model is applied to terahertz generation in biased GaAs photoconductors.

© 1994 Optical Society of America

History
Original Manuscript: June 10, 1994
Published: December 1, 1994

Citation
G. Rodriguez, S. R. Caceres, and A. J. Taylor, "Modeling of terahertz radiation from biased photoconductors: transient velocity effects," Opt. Lett. 19, 1994-1996 (1994)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-19-23-1994


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References

  1. J. T. Darrow, X.-C. Zhang, D. H. Auston, J. D. Morse, IEEE J. Quantum Electron. 28, 1607 (1992). [CrossRef]
  2. D. You, R. R. Jones, D. R. Dykaar, P. H. Bucksbaum, Opt. Lett. 18, 290 (1993). [CrossRef] [PubMed]
  3. P. K. Benicewicz, A. J. Taylor, Opt. Lett. 18,1332 (1993). [CrossRef] [PubMed]
  4. A. J. Taylor, P. K. Benicewicz, S. M. Young, Opt. Lett. 18, 1340 (1993). [CrossRef] [PubMed]
  5. B. I. Greene, P. N. Saeta, D. R. Dykaar, S. Schmitt-Rink, S. L. Chuang, IEEE J. Quantum Electron. 28, 2302 (1992). [CrossRef]
  6. A. E. Iverson, G. M. Wysin, D. L. Smith, A. Redondo, Appl. Phys. Lett. 52, 2148 (1988). [CrossRef]
  7. P. K. Benicewicz, J. P. Roberts, A. J. Taylor, “Scaling of terahertz radiation from large-aperture, biased photoconductors,”J. Opt. Soc. Am. B (to be published).
  8. The data in Fig. 1 of Ref. 6 can be fitted by a mobility, μ(t, t′)> given by Eq. (4), with μf = 7500 cm2/V s and τa = 2.5 ps for Eb = 1 kV/cm, μf = 6100 cm2/V s and τa = 2 ps for Eb = 3 kV/cm, μf = 3800 cm2/V s and τa = 1.5 ps for Eb = 5 kV/cm, and μf = 1150 cm2/V s and τa = 0.25 ps for Eb = 10 kV/cm.

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