Ultrafast Second-Harmonic Generations in a Plasmonic Two-Wire Transmission-Line
Tzu-Yu Chen1*, Fan-Cheng Lin3, Jer-Shing Huang2, Chen-Bin Huang1
1Institute of Photonics Technologies, National Tsing Hua University, Hsinchu, Taiwan
2Leibniz Institute of Photonic Technology, Leibniz Institute of Photonic Technology, Jena, Germany
3Department of Chemistry, National Tsing Hua University, Hsinchu, Taiwan
* Presenter:Tzu-Yu Chen, email:a54854854@gmail.com.tw
A completely symmetric plasmonic two-wire transmission-line (TWTL) is
successfully used for ultrafast second-harmonic generation (SHG). To our best knowledge, we
provide the first compelling experimental evidence over SHG using surface plasmon polaritons.
Interestingly, regardless of the two potential modes excited at the fundamental frequency, the
resulting SHGs are always of the asymmetric mode.

Keywords: surface plasmon, second-harmonic generation