Laser & Optoelectronics Progress, Volume. 57, Issue 11, 111424(2020)
Fabrication of Large-Scale Free-Standing Terahertz Wire Grid Polarizer by Femtosecond Laser Micro-Machining
Based on the finite-difference time-domain (FDTD) method, two kinds of terahertz line grid polarizers with enhanced line structures are designed to eliminate the influences of gravity and air disturbance on the performance of polarizers. The polarizers are fabricated by femtosecond laser micro-machining. The performance of polarizers is measured by time-domain terahertz spectroscopy and is compared with that of a commercial line grid polarizer. It is found that the transmittance of the polarizers is consistent with FDTD results. The degree of polarization and extinction ratio of the polarizer with discontinuous enhancement lines are better than that of commercial line grid polarizers.
Get Citation
Copy Citation Text
Ying Chen, Jie Wang, Tao Gao, Weilin Zhu, Xiangfeng Wang, Feng Huang. Fabrication of Large-Scale Free-Standing Terahertz Wire Grid Polarizer by Femtosecond Laser Micro-Machining[J]. Laser & Optoelectronics Progress, 2020, 57(11): 111424
Category: Lasers and Laser Optics
Received: Feb. 13, 2020
Accepted: Apr. 4, 2020
Published Online: Jun. 2, 2020
The Author Email: Huang Feng (huangf@fzu.edu.cn)