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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 16, Iss. 19 — Sep. 15, 2008
  • pp: 15123–15129

Optical modulation of terahertz pulses in a parallel plate waveguide

D. G. Cooke and P. Uhd Jepsen  »View Author Affiliations


Optics Express, Vol. 16, Issue 19, pp. 15123-15129 (2008)
http://dx.doi.org/10.1364/OE.16.015123


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Abstract

In this work we present a technique for optically modulating a terahertz pulse inside a parallel plate waveguide. A novel semiconductor filled waveguide is formed by coating both sides of a thin, high resistivity silicon slab with a transparent conducting oxide. While the waveguide is intrinsically lossy due to the low conductivity of the oxides, it permits photoexcitation through the plates, generating free carriers within the silicon that modulates the terahertz pulse transmission. We demonstrate this modulation by observing the Drude response of photoexcited carriers within the silicon in a narrow strip inside the waveguide.

© 2008 Optical Society of America

OCIS Codes
(230.4110) Optical devices : Modulators
(230.7390) Optical devices : Waveguides, planar
(320.5390) Ultrafast optics : Picosecond phenomena
(350.4010) Other areas of optics : Microwaves

ToC Category:
Optical Devices

History
Original Manuscript: August 8, 2008
Revised Manuscript: September 8, 2008
Manuscript Accepted: September 8, 2008
Published: September 10, 2008

Citation
D. G. Cooke and P. U. Jepsen, "Optical modulation of terahertz pulses in a parallel plate waveguide," Opt. Express 16, 15123-15129 (2008)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-16-19-15123


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