METHOD OF DETERMINING PENETRATION OF SOLID BODIES IN INFRARED SPECTRAL RANGE Russian patent published in 2005 - IPC

FIELD: optics.

SUBSTANCE: method can be used for determining optical constants of solid bodies. Method of determining penetration of solid bodies in IR spectral range includes separation of monochromatic incident radiation beam onto mark and measurement beams, excitation of surface electromagnet wave (SEW) by incident radiation onto flat surface of sample, run of SEW of two different macroscopic distances, registration of radiation intensity in area where mark and measurement beams cross at selected distances of SEW run, calculation of complex factor of refraction of SEW based on the results of measurements and dielectric permeability of material due to solving dispersion equation of SEW for wave-guiding structure which covers surface of sample. Incident radiation is divided to two beams till interaction of beam with sample. SEW is transformed into volume wave within boundaries of sample's flat surface of wave-guiding SEW. Intensity of radiation is registered within area of crossing of two beams only in one point. After measurement beam in form of SEW pass any of two selected distances of sample's surface the intensity of its radiation is registered additionally.

EFFECT: improved precision; simplified procedure of measurement.

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