Invariant embedding technique for medium permittivity profile reconstruction using terahertz time-domain spectroscopy

Kirill I. Zaytsev; Valeriy E. Karasik; Irina N. FokinaValentin I. Alekhnovich

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Invariant embedding technique for medium permittivity profile reconstruction using terahertz time-domain spectroscopy

机译：Invariant embedding technique for medium permittivity profile reconstruction using terahertz time-domain spectroscopy

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摘要

Reconstructing the dielectric permittivity profile (depth dependence of sample dielectric permittivity) is an important inverse problem. We present a new method for permittivity profile reconstruction based on terahertz time-domain spectroscopy signal processing. Reconstruction is accomplished in two steps. First, the sample pulse function is reconstructed using sample time-domain reflection data. Low- and high-frequency noise filtering and the interpolation of the pulse function at low frequencies are then applied. Second, an invariant embedding technique is used to calculate the dielectric permittivity profile based on the sample pulse function. Samples with known permittivity profiles have been studied experimentally using this procedure in order to verify this algorithm. This algorithm is stable to additive Gaussian white noise as shown using mathematical modeling based on the finite-difference time-domain technique. Possible applications of this permittivity profile reconstruction technique are discussed.

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《Optical Engineering》 |2013年第6期|068203-1-068203-10|共10页
作者
Kirill I. Zaytsev; Valeriy E. Karasik; Irina N. FokinaValentin I. Alekhnovich;
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作者单位

Bauman Moscow State Technical University, Research and Educational Center "Photonics and Infrared Technology", Department of Radioelectronics and Laser Technology, Moscow, Russia;

Bauman Moscow State Technical University, Department of Radioelectronics and Laser Technology, Department of Fundamental Science, Moscow, Russia;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
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正文语种英语
中图分类计量学;
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Invariant embedding technique for medium permittivity profile reconstruction using terahertz time-domain spectroscopy

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