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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 9 — May. 6, 2013
  • pp: 11115–11124

A hybrid analysis method for plasmonic enhanced terahertz photomixer sources

Saman Jafarlou, Mohammad Neshat, and Safieddin Safavi-Naeini  »View Author Affiliations


Optics Express, Vol. 21, Issue 9, pp. 11115-11124 (2013)
http://dx.doi.org/10.1364/OE.21.011115


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Abstract

A hybrid analysis of a continuous-wave terahertz photomixer source structure with plasmonic nano-grating electrodes is presented. Using the hybrid analysis, the enhancement of the optical power absorption due to the presence of the one-dimensional metallic nano-grating is investigated by defining an absorption enhancement factor. We show that the proposed absorption enhancement factor can be used as a design tool, whose maximization provides the optimum geometrical parameters of the nano-grating. Based on drift-diffusion model, the photocurrent enhancement due to the nano-grating electrodes is studied under three different bias configurations. Moreover, the dependence of the photocurrent on the physical parameters of the photomixer is analyzed.

© 2013 OSA

OCIS Codes
(040.5150) Detectors : Photoconductivity
(240.6680) Optics at surfaces : Surface plasmons
(040.2235) Detectors : Far infrared or terahertz

ToC Category:
Detectors

History
Original Manuscript: March 5, 2013
Revised Manuscript: April 12, 2013
Manuscript Accepted: April 14, 2013
Published: April 30, 2013

Citation
Saman Jafarlou, Mohammad Neshat, and Safieddin Safavi-Naeini, "A hybrid analysis method for plasmonic enhanced terahertz photomixer sources," Opt. Express 21, 11115-11124 (2013)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-21-9-11115


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