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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Issue

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

Article ID

SPP-2023-PA-35

Section

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

Published

2023-07-14

How to Cite

[1]

HR Bardolaza, JPR Ferrolino, ICM Verona, VPL Juguilon, LNF Dela Rosa, ML Talara, H Kitahara, AS Somintac, AA Salvador, NIF Cabello, AE De Los Reyes, M Tani, and ES Estacio, Spintronic terahertz emission from a Ni/Pt bilayer film with a spoof surface plasmonic structure, Proceedings of the Samahang Pisika ng Pilipinas 41, SPP-2023-PA-35 (2023). URL: https://proceedings.spp-online.org/article/view/SPP-2023-PA-35.