Open AccessTerahertz Brewster polarizing beam splitter on a polymer substrate
Author(s) -
Mengen Zhang,
Xiangjun Li,
Shixiong Liang Shixiong Liang,
Pingan Liu,
Jianjun Liu,
Zhi Hong
Publication year - 2013
Publication title -
chinese optics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.617
H-Index - 37
ISSN - 1671-7694
DOI - 10.3788/col201311.122301
Subject(s) - optics , brewster , beam splitter , materials science , terahertz radiation , brewster's angle , optoelectronics , substrate (aquarium) , beam (structure) , physics , laser , oceanography , geology
The performance of a terahertz(THz) Brewster polarizing beam splitter on polymer substrate is studied theoretically and experimentally. Simulations by using finite-element method demonstrate that both transmittance/reflectance and their extinction ratios are better than its 45 counterpart in a broad frequency range. Especially, the reflection extinction ratio improves significantly. The results are also verified experimentally with THz time domain spectroscopy(TDS) and backward wave oscillator(BWO) measurement system.
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