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Optics Letters

Optics Letters

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  • Vol. 30, Iss. 15 — Aug. 1, 2005
  • pp: 1992–1994

Active optical control of the terahertz reflectivity of high-resistivity semiconductors

L. Fekete, J. Y. Hlinka, F. Kadlec, P. Kuzel, and P. Mounaix  »View Author Affiliations


Optics Letters, Vol. 30, Issue 15, pp. 1992-1994 (2005)
http://dx.doi.org/10.1364/OL.30.001992


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Abstract

We study theoretically and demonstrate experimentally light-controllable terahertz reflectivity of high-resistivity semiconductor wafers. Photocarriers created by interband light absorption form a thin conducting layer at the semiconductor surface, which allows the terahertz reflectivity of the element to be tuned between antireflective (R<3%) and highly reflective (R>85%) limits by means of the intensity and wavelength of the optical illumination.

© 2005 Optical Society of America

OCIS Codes
(160.5140) Materials : Photoconductive materials
(230.1150) Optical devices : All-optical devices
(230.4110) Optical devices : Modulators
(300.6270) Spectroscopy : Spectroscopy, far infrared
(300.6500) Spectroscopy : Spectroscopy, time-resolved
(310.6860) Thin films : Thin films, optical properties

Citation
L. Fekete, J. Y. Hlinka, F. Kadlec, P. Kuzel, and P. Mounaix, "Active optical control of the terahertz reflectivity of high-resistivity semiconductors," Opt. Lett. 30, 1992-1994 (2005)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-30-15-1992


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References

  1. M. C. Nuss and J. Orenstein, in Millimeter and Submillimeter Wave Spectroscopy of Solids, G.Grüner, ed., Vol. 74 of Topics in Applied Physics (Springer-Verlag, 1998), Chap. 2, pp. 7-50.
  2. D. Mittleman, Sensing with Terahertz Radiation (Springer-Verlag, 2003).
  3. B. Ferguson and X.-C. Zhang, Nat. Mater. 1, 26 (2002). [CrossRef]
  4. J. Kröll, J. Darmo, and K. Unterrainer, Electron. Lett. 40, 763 (2004).
  5. M. Born and E. Wolf, Principles of Optics, 7th ed. (Cambridge U. Press, 2003).
  6. J. D. Jackson, Classical Electrodynamics (Wiley, 1998).
  7. F. Kadlec, H. Nemec, and P. Kuzel, Phys. Rev. B 70, 125205 (2004). [CrossRef]
  8. P. Kuzel and J. Petzelt, Ferroelectrics 239, 949 (2000).
  9. R. Jacobsson, in Progress in Optics, E.Wolf, ed. (North-Holland, 1965), Chap. 5, pp. 255-258.

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