Laser & Optoelectronics Progress, Volume. 55, Issue 2, 021415(2018)
Substrateless Terahertz Band-Pass Filters Fabricated by Femtosecond Laser Micro-Machining
Three groups of cross-shaped terahertz band-pass filters with different central frequencies are designed by using the finite difference time domain method. A femtosecond laser micro-machining system is built and the substrateless terahertz filter on a single-layered aluminum foil is fabricated. The transmissivities of these band-pass filters are tested by using the time-domain terahertz spectroscopy system. The experimental results are in a good agreement with the simulated results. All the transmissivities at central frequencies of these filters are over 85%, which reaches the commercial level of terahertz filters.
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Bingpan Gao, Yanzhang Lin, Ying Chen, Yanqing Chen, Xiangfeng Wang. Substrateless Terahertz Band-Pass Filters Fabricated by Femtosecond Laser Micro-Machining[J]. Laser & Optoelectronics Progress, 2018, 55(2): 021415
Category: Lasers and Laser Optics
Received: Sep. 1, 2017
Accepted: --
Published Online: Sep. 10, 2018
The Author Email: Wang Xiangfeng (xfwang@fzu.edu.cn)