Improvement in the Detection Efficiency of Terahertz (THz) Time-domain Spectroscopy (TDS) by applying an Alternating Magnetic Field Bias in Spintronic Emitter

Hideaki Kitahara, Katsuyuki Ishii,Miezel Talara,Takashi Furuya,Mary Clare Escano,Masahiko Tani,Dmitry S. Bulgarevich,Dongfeng He,Makoto Watanabe

2023 48th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)（2023）

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摘要

In this study, we demonstrate the enhancement in the detection performance of spintronic THz - TDS system by employing an alternating-current (AC) magnetic field bias. The AC bias was provided by an antenna mount which we fabricated. Compared with the direct-current (DC) magnetic field bias, we have observed twice the emission amplitude from the AC-biased magnetic field based on the obtained temporal waveforms from a spintronic THz emitter.

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关键词

alternating-current magnetic field bias,antenna mount,detection efficiency,direct-current magnetic field bias,spintronic THz - TDS system,spintronic THz emitter,terahertz time-domain spectroscopy

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