Fourier Analysis of Interferograms Formed by Surface-Plasmons Generated by Terahertz Synchrotron Radiation

G N Zhizhin; Жижин Герман Николаевич; A P Kyrianov; Кирьянов Анатолий Павлович; N I Golovtsov; Головцов Николай Иванович; O V Khitrov; Хитров Олег Владимирович; A K Nikitin; Никитин Алексей Константинович

Fourier Analysis of Interferograms Formed by Surface-Plasmons Generated by Terahertz Synchrotron Radiation

Authors: Zhizhin GN¹, Kyrianov AP¹, Golovtsov NI², Khitrov OV³, Nikitin AK⁴
Affiliations:
1. Scientific and Technological Center for Unique Instrumentation of RAS
2. People's Friendship University of Russia
3. Close corporation "Sukhoi Civil Aircraft Company"
4. Novosibirsk State University
Issue: No 1 (2012)
Pages: 85-95
Section: Articles
URL: https://journals.rudn.ru/miph/article/view/8777

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Abstract

The problem of Fourier analysis of interferograms formed in terahertz (THz) synchrotron parallel beams, one of which is produced by surface plasmons (SPs) running along the surface of a conducting sample placed in one of the Mach-Zehnder interferometer arms, is considered in the paper. It is demonstrated that the analytical procedure employing the complete Fourier transform of the interferograms, got while scanning the movable mirror in the reference arm and registered at two distances run by the SPs, enables one to obtain the THz SPs complex refractive index spectrum and thus - the spectrum of the sample complex dielectric permittivity. Employment of a synchrotron source in SPs Fourier spectrometers raises the signal to noise ratio as compared to the blackbody emitter by a factor of 108 and facilitates the calibration procedure as synchrotron radiation intensity is in direct proportion to its frequency.

Keywords

Fourier-analysis, complete Fourier transform, terahertz radiation, surface plasmons, thin films, interferometry, surface electromagnetic waves, optical constants, dielectric spectroscopy

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Vol 31, No 4 (2023)

Fourier Analysis of Interferograms Formed by Surface-Plasmons Generated by Terahertz Synchrotron Radiation

Full Text

Abstract

Keywords

About the authors

G N Zhizhin

A P Kyrianov

N I Golovtsov

O V Khitrov

A K Nikitin

References

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