An ultrafast laser micromachined broadband terahertz frequency selective surface

Bulletin of Materials Science

B S SREEJA^1¹  E MANIKANDAN^1²  S SASI PRINCY^1³ 

[1] Center for Laser Processing of Materials, ARCI, Hyderabad, India^2;Department of Condensed Matter Physics and Materials Science, Tata Institute of Fundamental Research, Mumbai, India^3;Department of Electronics and Communication Engineering, SSN College of Engineering, Chennai, India^1

关键词: Terahertz (THz);    frequency selective surface (FSS);    band-pass filter;    laser micromachining.;   

DOI  :  

学科分类：材料工程

来源: Indian Academy of Sciences

【 摘 要 】

The purpose of this paper is to focus on the frequency selective surface (FSS) filter structure which exhibits a broadband frequency response operating in the terahertz (THz) frequency regime. The achievement of the broadbandfrequency response has been accomplished by means of only invoking the FSS structure excluding the presence of a ground plane and also excluding the multilayered FSS technique. The FSS filter is simulated using CST Microwave Studio. This simulation has been carried out using Teflon as the substrate which is a dielectric over which the conductive material gold with a thickness of 2 $\mu$m is coated in which the FSS filter structure is designed with periodic hexagonal aperture unit cells. The structure of the proposed frequency selective surface filter helps in achieving a broadband frequency response witha bandwidth of 300 GHz centred at 0.36 THz. The designed FSS structure is a bandpass filter and it exhibits the most imperative properties of angle resolvability and polarization insensitivity. The fabrication of the same has been carried outusing the laser micromachining process.

【 授权许可】

CC BY