Extraordinary Transmission of Bull's Eye Structure Observed by Up-Conversion-Based THz-Wave Frequency-Domain Spectroscopy

被引：1

作者：

Takida, Yuma ^{[1
]}

Imai, Kaoru ^{[2
]}

Okatani, Taiyu ^{[2
]}

Ohno, Seigo ^{[1
,3
]}

Kanamori, Yoshiaki ^{[2
]}

Minamide, Hiroaki ^{[1
]}

机构：

[1] RIKEN, Ctr Adv Photon, Sendai, Miyagi 9800845, Japan

[2] Tohoku Univ, Sch Engn, Dept Robot, Sendai, Miyagi 9808579, Japan

[3] Tohoku Univ, Sch Sci, Dept Phys, Sendai, Miyagi 9808579, Japan

来源：

2022 47TH INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER AND TERAHERTZ WAVES (IRMMW-THZ 2022) | 2022年

关键词：

D O I：

10.1109/IRMMW-THz50927.2022.9895791

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Using optical up-conversion-based THz-wave frequency-domain spectroscopy, we observed the extraordinary transmission of a bull's eye structure fabricated by a micromachining technique. The fabricated bull's eye structure, which consisted of a circular aperture of 100-mu m diameter and concentric periodic grooves of 200-mu m periodicity and 20-mu m depth, showed the surface plasmon-enhanced transmission peak at 1.48 THz and the subwavelength-scale confinement of the transmitted THz-wave beam.

引用

页数：2