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Parylene anti-reflection coating of a quasi-optical hot-electron-bolometric mixer at terahertz frequencies
Hübers, H. - W., Schubert, J., Krabbe, A., Birk, M., Wagner, G., Semenov, A., et al. (2001). Parylene anti-reflection coating of a quasi-optical hot-electron-bolometric mixer at terahertz frequencies. Infrared Physics & Technology, 42(1), 41–47.
Parylene C was investigated as anti-reflection coating for silicon at terahertz frequencies. Measurements with a Fourier-transform spectrometer show that the transmittance of pure silicon can be improved by about 30% when applying a layer of Parylene C with a quarter wavelength optical thickness. The 10% bandwidth of this coating extends from 1.5 to 3 THz for a center frequency of 2.3–2.5 THz, where the transmittance is constant. Heterodyne measurements demonstrate that the noise temperature of a hot-electron-bolometric mixer can be reduced significantly by coating the silicon lens of the hybrid antenna with a quarter wavelength Parylene C layer. Compared to the same mixer with an uncoated lens the improvement is about 30% at a frequency of 2.5 THz.
Parylene anti-reflection coating of a quasi-optical hot-electron-bolometric mixer at terahertz frequenciesHübers, H.-W.Schubert, J.Krabbe, A.Birk, M.Wagner, G.Semenov, A.Gol’tsman, G.Voronov, B.Gershenzon, E.info:doi/10.1016/S1350-4495(00)00057-8openurl:?ctx_ver=Z39.88-2004&rfr_id=info%3Asid%2Fhttps%3A%2F%2Fdb.rplab.ru%2Frefbase%2F&genre=article&atitle=Parylene%20anti-reflection%20coating%20of%20a%20quasi-optical%20hot-electron-bolometric%20mixer%20at%20terahertz%20frequencies&title=Infrared%20Physics%20%26%20Technology&stitle=Infrared%20Physics%20%26%20Technology&issn=1350-4495&date=2001&volume=42&issue=1&spage=41&epage=47&aulast=H%C3%BCbers&aufirst=H.-W.&au=Schubert%2C%20J.&au=Krabbe%2C%20A.&au=Birk%2C%20M.&au=Wagner%2C%20G.&au=Semenov%2C%20A.&au=Gol%E2%80%99tsman%2C%20G.&au=Voronov%2C%20B.&au=Gershenzon%2C%20E.&id=info%3Adoi%2F10.1016%2FS1350-4495%2800%2900057-8&sid=refbase%3ARpLabcitekey:Huebers_etal2001Hübers, H. - W., Schubert, J., Krabbe, A., Birk, M., Wagner, G., Semenov, A., et al. (2001). Parylene anti-reflection coating of a quasi-optical hot-electron-bolometric mixer at terahertz frequencies. Infrared Physics & Technology, 42(1), 41-47.2001JournalArticletextNbN HEB mixers, anti-reflection coatingurl:https://linkinghub.elsevier.com/retrieve/pii/S13504495000005781350-4495Infrared Physics & Technology20014214147