en Efficient low loss nano-metallic suspended waveguide for THz waves generation تخصصی Special پژوهشي Research Abstract- A tunable nanosource of continuous wave terahertz radiation based on difference frequency generation (DFG) is proposed and investigated. In this work we extend and optimize surface plasmon-polariton (SPP) waveguides to confine light to nanoscales. This new structure offers many advantages to produce more efficient THz waves with lower loss. The calculations indicate for frequency 0.6 THz efficiency is about 3 times larger (12×10-4 W-1 from a 1cm long device) with lower loss. Indeed air gap distance variations to find the phase matching condition don’t affect on overlap factor. Abstract- A tunable nanosource of continuous wave terahertz radiation based on difference frequency generation (DFG) is proposed and investigated. In this work we extend and optimize surface plasmon-polariton (SPP) waveguides to confine light to nanoscales. This new structure offers many advantages to produce more efficient THz waves with lower loss. The calculations indicate for frequency 0.6 THz efficiency is about 3 times larger (12×10-4 W-1 from a 1cm long device) with lower loss. Indeed air gap distance variations to find the phase matching condition don’t affect on overlap factor. nonlinear optics, integrated optics, terahertz waves. nonlinear optics, integrated optics, terahertz waves. 877 880 http://opsi.ir/browse.php?a_code=A-10-1-333&slc_lang=en&sid=1 Marzieh Asadnia Fard Jahromi Marzieh Asadnia Fard Jahromi kh_asadnia@yahoo.com 10031947532846001639 10031947532846001639 Yes University of Kashan University of Kashan Hamid Reza Zangeneh Hamid Reza Zangeneh hrzangeneh@kashanu.ac.ir 10031947532846001640 10031947532846001640 No University of Kashan University of Kashan