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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 5 — Mar. 11, 2013
  • pp: 5842–5858

Design of ultra-broadband terahertz polymer waveguide emitters for telecom wavelengths using coupled mode theory

Felipe A. Vallejo and L. Michael Hayden  »View Author Affiliations

Optics Express, Vol. 21, Issue 5, pp. 5842-5858 (2013)

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We use coupled mode theory, adequately incorporating optical losses, to model ultra-broadband terahertz (THz) waveguide emitters (0.1-20 THz) based on difference frequency generation of femtosecond infrared (IR) optical pulses. We apply the model to a generic, symmetric, five-layer, metal/cladding/core waveguide structure using transfer matrix theory. We provide a design strategy for an efficient ultra-broadband THz emitter and apply it to polymer waveguides with a nonlinear core composed of a poled guest-host electro-optic polymer composite and pumped by a pulsed fiber laser system operating at 1567 nm. The predicted bandwidths are greater than 15 THz and we find a high conversion efficiency of 1.2 × 10−4 W−1 by balancing both the modal phase-matching and effective mode attenuation.

© 2013 OSA

OCIS Codes
(190.4390) Nonlinear optics : Nonlinear optics, integrated optics
(320.7110) Ultrafast optics : Ultrafast nonlinear optics
(300.6495) Spectroscopy : Spectroscopy, teraherz

ToC Category:
Ultrafast Optics

Original Manuscript: December 12, 2012
Revised Manuscript: February 20, 2013
Manuscript Accepted: February 22, 2013
Published: March 1, 2013

Felipe A. Vallejo and L. Michael Hayden, "Design of ultra-broadband terahertz polymer waveguide emitters for telecom wavelengths using coupled mode theory," Opt. Express 21, 5842-5858 (2013)

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