OPTICAL CONTROL METHOD FOR LINEAR POLARIZATION OF RADIATION Russian patent published in 2023 - IPC G02B5/30 B82Y20/00 

FIELD: optical equipment.

SUBSTANCE: invention can be used for precise control of polarization of coherent light sources, as well as in spinoptronics. In a method for optically controlling linear polarization of radiation produced by an exciton-polariton condensate formed in an inorganic semiconductor sample upon its nonresonant excitation by laser radiation, the exciton-polariton condensate is excited by a continuous wave laser with linear polarization at a wavelength detuned from the mode of the semiconductor microcavity used as sample, before changing the properties of the exciting laser radiation, the polariton condensate is excited with a symmetric pump beam profile and the position of the sample is scanned in order to find the point at which the radiation of the specified condensate will have a degree of polarization less than 0.2, after which the excitation profile is changed to elliptical and the linear polarization of the radiation is controlled, changing the properties of the exciting laser radiation, such as the ellipticity of the excitation laser beam profile, the orientation of the excitation laser beam profile on the sample, the laser excitation power.

EFFECT: possibility of optical control of linear polarization of radiation.

10 cl, 4 dwg