Phase-Matching the Second-Harmonic Generation in a Plasmonic Two-Wire Transmission-Line

Komal Gupta^1*, Anand Hegde¹, Chen-Bin Huang¹

¹Institute of Photonics Technologies, National Tsing Hua University, Hsinchu City, Taiwan

* Presenter:Komal Gupta, email:komalgupta.240299@gmail.com

We numerically and experimentally investigate the second-harmonic generation (SHG) efficiency of a gold plasmonic two-wire transmission-line. By leveraging the intrinsic material properties of gold and precise geometric parameter tuning of TWTL, we achieved an extended coherence length. At phase-matching conditions, we report five times enhancement in the conversion efficiency of SHG.

Keywords: Surface Plasmons Polaritons, Second-Harmonic Generation, Surface Nonlinearity, Coherence Length