TY  - CONF
AU  - Loudkov, D.
AU  - Tong, C-Y E.
AU  - Marrone, D. P.
AU  - Ryabchun, S.
AU  - Paine, S. N.
AU  - Blundell, R.
PY  - 2005
DA  - 2005//
TI  - Transmission measurements of infrared filters for low-noise terahertz receiver applications
T2  - Proc. 16[super:th] Int. Symp. Space Terahertz Technol.
BT  - Proc. 16[super:th] Int. Symp. Space Terahertz Technol.
SP  - 354
EP  - 357
KW  - FTS
KW  - Zitex
KW  - alkali halide
KW  - crystalline quartz
KW  - Parylene
KW  - polyethylene
KW  - IR filters
KW  - transmission
KW  - THz applications
AB  - Infrared (IR) filters are very important to the efficient operation of cryogenic receivers. Usually, such filters are mounted on the radiation shield of the cryostat to reduce the heat load to the 4 K stage. Insufficient filtering may cause the temperature of the mixing element in a receiver to be excessively warm, leading to degradation in sensitivity. These filters should be effective in blocking the room temperature IR radiation from outside the cryostat, yet should be transparent across the desired signal frequency band. In the Terahertz frequency range, which is close to the infrared, it is difficult to find an inexpensive low- loss material that can provide the required IR blocking capacity. We present transmission measurements, made using a Fourier Transform Spectrometer (FTS), of a number of potential infrared filters between 0.4 and 1.6 THz. The filters tested include the widely-used, Teflon-based, Zitex-A and Zitex-G films, alkali halide based infrared filter, and crystalline quartz coated with Parylene, and polyethylene films.
UR  - https://www.nrao.edu/meetings/isstt/2005.shtml
N1  - exported from refbase (https://db.rplab.ru/refbase/show.php?record=1473), last updated on Mon, 17 May 2021 18:48:59 -0500
ID  - Loudkov_etal2005
ER  -