All-carbon THz components based on laser-treated diamond

被引：19
作者：
Amoruso, S. [1 ,2 ]
Andreone, A. [1 ,2 ]
Bellucci, A. [3 ]
Koral, C. [4 ]
Girolami, M. [3 ]
Mastellone, M. [3 ]
Mou, S. [1 ]
Orlando, S. [3 ]
Papari, G. P. [1 ]
Paparo, D. [6 ]
Polini, R. [5 ]
Rubano, A. [1 ,6 ]
Santagata, A. [3 ]
Serpente, V. [3 ]
Valentini, V. [3 ]
Trucchi, D. M. [3 ]
机构：
[1] Univ Napoli Federico II, Complesso Univ Monte S Angelo, Dipartimento Fis, Via Cintia, I-80126 Naples, Italy
[2] UOS Napoli, Complesso Univ Monte S Angelo, SuPerconducting & Other INnovat Mat & Devices Ins, CNR SPIN, Via Cintia, I-80126 Naples, Italy
[3] CNR ISM, Inst Struct Matter ISM CNR, DiaTHEMA Lab, Via Salaria Km 29-300, Monterotondo, RM, Italy
[4] Ist Nazl Fis Nucl, Sez Napoli, Via Cintia, I-80126 Naples, Italy
[5] Univ Roma Tor Vergata, Dipartimento Sci & Tecnol Chim, Via Ric Sci 1, I-00133 Rome, Italy
[6] CNR ISASI, Inst Appl Sci & Intelligent Syst ISASI E Caianiel, Via Campi Flegrei 34, I-80078 Pozzuoli, NA, Italy
来源：
CARBON | 2020年 / 163卷
关键词：
BLACK DIAMOND; FEMTOSECOND; RAMAN;
D O I：
10.1016/j.carbon.2020.03.023
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
We report on fs laser structuring and graphitization of diamond and experimental characterization of its THz response. A full characterization of graphitized, conductive layer generated by laser irradiation is carried out by performing scanning-electron microscopy, Raman spectroscopy and electrical measurements. The transmittance of the laser textured diamond samples, both with the graphitic overlayer and after selective oxidizing etching, is analyzed in the (0.25 divided by 6.0) THz spectral range. A significant selective absorption of the graphitized overlayer towards polarized THz radiation is demonstrated, which is associated to the formation of graphitic laser induced periodic surface structures. This anisotropy allows conceiving compact passive metasurfaces based on conductive/dielectric patterns on the diamond plate surface for the development of robust, lightweight and broadband THz optical components. (C) 2020 Elsevier Ltd. All rights reserved.
引用
收藏
页码：197 / 201
页数：5
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