1A. M. Prokhorov General Physics Institute (Russian Federation) 2Institute of Solid State Physics (Russian Federation) 3Sechenov Univ. (Russian Federation)
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In the paper, the double-Debye and double-overdamped-oscillator models are considered for parametrization of the terahertz (THz) dielectric response of human brain tissues. Experimental data can be accurately reproduced for the intact tissues and gliomas using both models. While the double-Debye dielectric model is widely used in THz biophotonics, the double-overdamped-oscillator model appears to be more physically rigorous, since it satisfies the sum rule. In our opinion, the described double-overdamped-oscillator model is important for further research and development in THz biophotonics and neurodiagnosis of tumors.
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G. R. Musina, N. V. Chernomyrdin, I. N. Dolganova, V. N. Kurlov, P. V. Nikitin, G. A. Komandin, K. I. Zaytsev, A. A. Gavdush, "Double-overdamped-oscillator model of terahertz complex dielectric permittivity of human brain tissues," Proc. SPIE 11827, Terahertz Emitters, Receivers, and Applications XII, 118270G (1 August 2021); https://doi.org/10.1117/12.2593442