METHOD OF DETERMINING FIELD INTENSITY DISTRIBUTION OF TERAHERTZ SURFACE PLASMON-POLARITONS ABOVE THEIR GUIDING SURFACE Russian patent published in 2024 - IPC G01N21/55 

Abstract RU 2829017 C1

FIELD: measuring.

SUBSTANCE: invention relates to non-contact methods of investigating the surface of metals by means of terahertz (THz) radiation. Method includes generation of surface plasmon polaritons (SPP) on a flat surface of a conducting sample by non-absorbed by the environment by monochromatic p-polarized radiation of an external source, radiation receiver shielding from spurious body waves (BW) generated during radiation conversion to SPP, measurement of the electromagnetic field intensity distribution over the sample surface after the SPP run of a distance commensurate with their propagation length, the measurement is performed along the normal to the surface within the limits, including the field of parasitic BW outgoing from the SPP track, and additionally determining the distribution on the normal of the field intensity of only these BWs, and the desired distribution of the SPP field intensity is found as the difference between the first and second found distributions within their overlap.

EFFECT: high accuracy of determining the field intensity distribution of terahertz surface plasmon-polaritons above their guiding surface.

1 cl, 2 dwg

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RU 2 829 017 C1

Authors

Gerasimov Vasilii Valerevich

Nikitin Aleksei Konstantinovich

Dates

2024-10-22Published

2024-05-17Filed