RT Journal Article T1 Antireflection self-reference method based on ultrathin metallic nanofilms for improving terahertz reflection spectroscopy A1 Lai, Weien A1 Cao, Haibing A1 Yang, Jun A1 Deng, Guangsheng A1 Yin, Zhiping A1 Zhang, Qian A1 Pelaz García, Beatriz A1 Pino González de la Higuera, Pablo Alfonso del K1 Antireflection coatings K1 Spectroscopy K1 Terahertz AB We present the potential of an antireflection self-reference method based on ultrathin tantalum nitride (TaN) nanofilms for improving terahertz (THz) reflection spectroscopy.The antireflection self-reference method is proposed to eliminate mutual interference caused by unwanted reflections, which significantly interferes with the important reflection from the actual sample in THz reflection measurement. The antireflection self-reference model was investigated using a wave-impedance matching approach, and the theoretical model was verified in experimental studies. We experimentally demonstrated this antireflection selfreference method can completely eliminate the effect of mutual interference, accurately recover the actual sample’s reflection and improve THz reflection spectroscopy. Our method paves the way to implement a straightforward, accurate and efficient approach to investigateTHz properties of the liquids and biological samples PB The Optical Society SN 1094-4087 YR 2018 FD 2018 LK http://hdl.handle.net/10347/19754 UL http://hdl.handle.net/10347/19754 LA eng NO Lai, W., Cao, H., Yang, J., Deng, G., Yin, Z., & Zhang, Q. et al. (2018). Antireflection self-reference method based on ultrathin metallic nanofilms for improving terahertz reflection spectroscopy. Optics Express, 26(15), 19470. doi: 10.1364/oe.26.019470 NO The Fund from Hefei University of Technology (407-0371000019); Sichuan Province Science and Technology Support Program (No. 2016GZ0250); the Fundamental Research Funds for the Central Universities (Grant No. JD2017JGPY0006); National Natural Science Foundation of China (Grant No.51607050); MINECO (MAT2015–74381-JIN to B.P., RYC2014–16962 and CTQ2017-89588-R to P.dP.); Xunta de Galicia (Centro singular de investigación de Galicia accreditation 2016–2019, ED431G/09); European Union (European Regional Development Fund – ERDF) DS Minerva RD 28 abr 2026