Efficient low-loss nanometallic suspended waveguide for terahertz generation

Hamid Reza Zangeneh; Marzieh Asadnia Fard Jahromi

doi:10.1117/1.OE.53.1.015101

3 January 2014 Efficient low-loss nanometallic suspended waveguide for terahertz generation

Hamid Reza Zangeneh, Marzieh Asadnia Fard Jahromi

Author Affiliations +

Optical Engineering, Vol. 53, Issue 1, 015101 (January 2014). https://doi.org/10.1117/1.OE.53.1.015101

Abstract

A tunable nanosource of continuous wave terahertz (THz) radiation based on difference frequency generation is proposed and investigated. In this work, we extend and optimize surface plasmon-polariton waveguides to confine light to nanoscales. This new structure offers many advantages to produce more efficient THz waves with lower loss. The presented calculations for 0.6 THz indicate that THz efficiency is about three times larger (12×10⁻⁴ W⁻¹ from a 1-cm long device) with lower loss. Indeed, air gap distance variations to find the phase matching condition do not affect overlap factor.

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Hamid Reza Zangeneh and Marzieh Asadnia Fard Jahromi "Efficient low-loss nanometallic suspended waveguide for terahertz generation," Optical Engineering 53(1), 015101 (3 January 2014). https://doi.org/10.1117/1.OE.53.1.015101

Published: 3 January 2014

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