Terahertz polarizing beam splitter based on copper grating on polyimide substrate

Mengen Zhang; Xiangjun Li; Wentao Wang; Jianjun Liu; Zhi Hong

doi:10.1117/12.999604

5 December 2012 Terahertz polarizing beam splitter based on copper grating on polyimide substrate

Mengen Zhang, Xiangjun Li, Wentao Wang, Jianjun Liu, Zhi Hong

Proceedings Volume 8562, Infrared, Millimeter-Wave, and Terahertz Technologies II; 85621S (2012) https://doi.org/10.1117/12.999604
Event: Photonics Asia, 2012, Beijing, China

Abstract

A terahertz polarizing beam splitter, based on a copper grating on polyimide (PI) substrate, was fabricated by the way of laser induced and non-electrolytic plating. The good polarization characteristics of the splitter in the range of 0°-180°polarization are verified experimentally using backward wave oscillator at fixed frequency of 300GHz, and the insertion losses of 0.13dB and 0.32dB are measured for the transmitted and reflected beams, respectively. The broadband transmission of TM wave of the splitter was also measured by terahertz time-domain spectroscopy, and the extinction ratio larger than 22dB is obtained in the frequency range of 0.2-1.5THz. The experiment results are in good agreement with finite element simulation results.

Citation Download Citation

Mengen Zhang, Xiangjun Li, Wentao Wang, Jianjun Liu, and Zhi Hong "Terahertz polarizing beam splitter based on copper grating on polyimide substrate", Proc. SPIE 8562, Infrared, Millimeter-Wave, and Terahertz Technologies II, 85621S (5 December 2012); https://doi.org/10.1117/12.999604

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