Spintronic terahertz emission from a Ni/Pt bilayer film with a spoof surface plasmonic structure

Authors

  • Hannah R. Bardolaza National Institute of Physics, University of the Philippines Diliman
  • John Paul R. Ferrolino Materials Science and Engineering Program, University of the Philippines Diliman
  • Ivan Cedrick M. Verona National Institute of Physics, University of the Philippines Diliman
  • Vince Paul L. Juguilon National Institute of Physics, University of the Philippines Diliman
  • Lourdes Nicole F. Dela Rosa National Institute of Physics, University of the Philippines Diliman
  • Miezel L. Talara Research Center for Development of Far-Infrared Region, University of Fukui, Japan
  • Hideaki Kitahara Research Center for Development of Far-Infrared Region, University of Fukui, Japan
  • Armando S. Somintac National Institute of Physics, University of the Philippines Diliman
  • Arnel A. Salvador National Institute of Physics, University of the Philippines Diliman
  • Neil Irvin F. Cabello Laser Science Laboratory, Toyota Technological Institute, Japan
  • Alexander E. De Los Reyes Tera-Photonics Research Team, RIKEN Center for Advanced Photonics, Japan
  • Masahiko Tani Research Center for Development of Far-Infrared Region, University of Fukui, Japan
  • Elmer S. Estacio National Institute of Physics, University of the Philippines Diliman

Abstract

A spintronic terahertz (THz) emitter with one-dimensional metal line structures at the THz output side was fabricated. The spintronic THz emitter consists of nanometer-thick Ni/Pt bilayer films grown by electron beam deposition, and the metal line structures consist of an array of micron-width Au metal lines fabricated using UV photolithography and resistive evaporation process. Using THz time-domain spectroscopy, a three-fold increase in the THz signal amplitude (ten-fold increase in the integrated THz power) was measured from the spintronic THz emitter coupled with the metal line array compared with the bare spintronic THz emitter. The enhancement is attributed to an extraordinary transmission resulting from spoof surface plasmon resonance. The excitation power dependence of the spintronic THz emission was also investigated.

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Published

2023-07-14

Issue

2023: Proceedings of the 41st Samahang Pisika ng Pilipinas Physics Conference

Section

Poster Session A (Materials Science, Instrumentation, and Photonics)

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All other associated economic and moral rights as granted by the Intellectual Property Code of the Philippines are maintained by the Authors.

How to Cite

[1]
“Spintronic terahertz emission from a Ni/Pt bilayer film with a spoof surface plasmonic structure”, Proc. SPP, vol. 41, no. 1, p. SPP-2023-PA-35, Jul. 2023, Accessed: Mar. 25, 2026. [Online]. Available: https://proceedings.spp-online.org/article/view/SPP-2023-PA-35