Novel technique for medium permittivity profile reconstruction using THz pulsed spectroscopy

Zaytsev, Kirill I.; Chernomyrdin, Nikita V.; Alekhnovich, V. I.

doi:10.1088/1742-6596/486/1/012010

Cited by 10 publications

(3 citation statements)

References 6 publications

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“…Moreover, as we all have involved in the scientific work at the University, we prepared lectures about our own research projects, concerning 3D-vision, 2 medical application of optical devices, 3-5 photonic crystals, 6-8 spectroscopy and its applications in various cases, [9][10][11][12][13][14] and fiber optics. For all of these seminars were explained the main results of the different studies.…”

Section: Activitiesmentioning

confidence: 99%

Summer school in Kabardino-Balkaria by BMSTU SPIE Student Chapter

et al. 2014

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This summer BMSTU SPIE Student Chapter have decided to visit Kabardino-Balkaria Republic of Caucasus (Russia) and spent there a week with children in a camp. It was called Summer School. We decided to organize it in order to engage talented and curious children in optics and photonics, and to show them how science could be for fun. Education and entertainment program included such activities as lectures, optical demonstrations, laser games, hiking in the forest, and others. As a result children had a good time outdoors, learned interesting facts and about optics and lasers, and of course found new friends who are keen to know more too. Four Chapter members and about 70 children of age 10-16 took part in this event.

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Section: Activitiesmentioning

confidence: 99%

Summer school in Kabardino-Balkaria by BMSTU SPIE Student Chapter

et al. 2014

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“…Such high temporal resolution can be achieved due to using ultrashort laser optical pulses for the generation and detection of the THz radiation. A pulse of the THz radiation has a broad frequency spectrum, extending from 0.1 to 3.0 THz, sometimes even to 25.0 THz (depending on the used methods of generation and detection), which allows analyzing spectral characteristics of the studied object by means of Fourier signal analysis [38,39] and studying its internal structure (THz tomography) [40][41][42].…”

Section: Introductionmentioning

confidence: 99%

A method of studying spectral optical characteristics of a homogeneous medium by means of terahertz time-domain spectroscopy

et al. 2015

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We have developed an algorithm for solving an inverse problem related to the reconstruction of spectral dependences of terahertz (THz) optical characteristics of a homogeneous medium in the form of a plane-parallel plate, which is based on processing signals obtained by a THz time-domain spectrometer. In contrast to existing methods, the developed algorithm allows studying the optical properties of dielectric samples that have a small thickness (down to 0.1 mm) and low index of refraction. Optical characteristics in the THz spectral range are determined by minimization of the error functional constructed based on experimental and theoretical complex transfer functions of the sample, wherein the theoretical transfer function is obtained by using a model of a Fabry-Perot quasi-resonator. The proposed method is experimentally verified by studying optical properties of test samples. The reconstructed THz optical characteristics are compared with the characteristics of the same test media obtained by means of the THz backward-wave oscillator spectroscopy, which allowed estimating the accuracy of the proposed method.

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“…The time-domain methods require a rather sophisticated and high-precision equipment for generating and registering narrow pulses, which complicates a practical application of these methods. Often the use is made of terahertz pulsed spectroscopy [6,7]. The frequency-domain methods are used for determining the desired parameters through measuring multiple frequencies, multiple angles, and different polarizations.…”

Section: Introductionmentioning

confidence: 99%

On Optimal Frequencies for Reconstruction of a One-Dimensional Profile of Gradient Layer’s Refractive Index

Tumakov

2014

International Journal of Optics

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The problem of reconstruction of a one-dimensional profile of gradient layer's refractive index is investigated. An algorithm for choosing a right frequency, at which a scattered field is measured, is proposed. It is concluded that at the correct choice of frequency one measurement must be sufficient. Moreover, in this case, regularization parameters of the residual functional are chosen as zero. It is shown that in case of measurements being carried out with errors, residual terms must be added to the functional.

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Novel technique for medium permittivity profile reconstruction using THz pulsed spectroscopy

Cited by 10 publications

References 6 publications

Summer school in Kabardino-Balkaria by BMSTU SPIE Student Chapter

Summer school in Kabardino-Balkaria by BMSTU SPIE Student Chapter

A method of studying spectral optical characteristics of a homogeneous medium by means of terahertz time-domain spectroscopy

On Optimal Frequencies for Reconstruction of a One-Dimensional Profile of Gradient Layer’s Refractive Index

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