On diagnostics of media using extremely short terahertz radiation pulses


The possibility of diagnosing the linear and nonlinear electrodynamic susceptibilities of media by examining the time profiles of extremely short terahertz radiation pulses (using pulsed terahertz spectroscopy methods) that are incident on a thin layer of a medium under study, are reflected from the layer, and are transmitted through it is shown theoretically. In the general case, the linear and nonlinear susceptibilities of different orders can be found by solving linear integral equations. Diagnostics is considerably simplified in the case of an isolated resonance of a medium with homogeneous spectral broadening, which is modeled by the response of an anharmonic oscillator.

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Correspondence to N. N. Rosanov.

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Original Russian Text © N.N. Rosanov, M.V. Arkhipov, R.M. Arkhipov, A.V. Pakhomov, I.V. Babushkin, 2017, published in Optika i Spektroskopiya, 2017, Vol. 123, No. 1, pp. 105–109.

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Rosanov, N.N., Arkhipov, M.V., Arkhipov, R.M. et al. On diagnostics of media using extremely short terahertz radiation pulses. Opt. Spectrosc. 123, 100–104 (2017). https://doi.org/10.1134/S0030400X17070219

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