INFRARED-RAY POLARIZATION CONVERSION PROCESS Russian patent published in 1997 - IPC

Abstract RU 2087020 C1

FIELD: laser engineering. SUBSTANCE: polarization conversion is effected during diffraction of incident rays under Wood anomaly conditions (resonant excitation of surface electromagnetic waves on diffraction gratings with profile depth h<λ,d and period d≥λ; phase shift may be in the range n<Φ<n. For example, linearly polarized rays with wavelength λ = 10,6 can be converted into circular-polarized radiation with conversion efficiency η ≃ 92-96%. In addition, adequate choice of grating parameters enables stable phase shift and effective conversion while wavelength and angle of ray incidence on grating are varied within wide range. EFFECT: improved conversion efficiency. 2 cl, 2 dwg, 1 tbl

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RU 2 087 020 C1

Authors

Panchenko V.Ja.

Seminogov V.N.

Jakunin V.P.

Manankov V.M.

Okorkov V.N.

Golovatjuk N.N.

Dates

1997-08-10Published

1993-04-27Filed