Semiconductor Physics, Quantum Electronics & Optoelectronics, 26 (1), P. 059-067 (2023).
DOI: https://doi.org/10.15407/spqeo26.01.059
Silicon lenses with HDPE anti-reflection coatings for low THz frequency range
1V. Lashkaryov Institute of Semiconductor Physics, NAS of Ukraine, 41, prosp. Nauky, 03680 Kyiv, Ukraine Abstract.
Presented in this paper have been the design, fabrication, and testing of the high
resistance floating-zone silicon (HRFZ-Si) optics with the anti-reflection (AR) high-density
polyethylene (HDPE) coatings, for the low part of terahertz (THz) frequency range
(? ? 0.14 THz), by using the precision press molding. Experimental results of the
transmission of the wafers and lenses with double-sided anti-reflection HDPE coatings for
radiation frequency 0.14 THz showed an increase in the transmittance T values up to ?1.45
times as compared to T magnitudes in wafers and lenses without HDPE coatings. The
capability to use terahertz lenses with HDPE interference films and the technology of press
molding, as a cheaper alternative to the horn antenna applications for the terahertz range of
0.14 THz was shown. With advancements in THz imaging and 6G communication
technologies, further implementation of these Si optical elements is possible.
Keywords:HRFZ-Si lens, anti-reflection HDPE coatings, THz applications.
A.V. Shevchik-Shekera1,
F.F. Sizov1,
O.G. Golenkov1,
I.O. Lysiuk1,
V.О. Petriakov2,
M.Yu. Kovbasa1
1Institute for Nuclear Research, NAS of Ukraine, 47, prosp. Nauky, 03680 Kyiv, Ukraine
E-mail: shevchik-shekera@isp.kiev.ua
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