WIDEBAND ACOUSTOOPTICAL METRE OF RADIO SIGNAL PARAMETRES Russian patent published in 2009 - IPC G02F1/33 

FIELD: physics, optics.

SUBSTANCE: invention is related to acoustooptical metres of radio signal parametres that operate in wide band of frequencies and may be used in plants of optical processing of information. In acoustooptical metre of radio signal parametres, comprising acoustooptical deflector with index of crystal refraction n and antiphased system of converters, having electrical period d at length L and velocity V of ultrasound in its two main petals, to electric input of which measured signal is supplied, and through the left working side of acoustooptical deflector at the angle θ_P1 to it, radiation is sent to the left ultrasound petal from the first laser source of radiation with wave length λ₁, which after diffraction at acoustic wave of the left ultrasound petal is directed by the first integrating lens to the first row of photodetectors, installed in plane of the first lens image, and through the right working side of acoustooptical deflector at the angle θ_P2 to it, radiation is supplied to the right petal of ultrasound from the second laser with wave length λ₂, which after diffraction at acoustic wave of the right ultrasound petal is directed by the second integrating lens to the second row of photodetectors, installed in the plane of the second integrating lens image. Besides total band of working frequencies Δf_Σ is related to parametres d, L, λ₁, λ₂, V, n and k by expression where parametre k sets level of heterogeneity of frequency characteristic.

EFFECT: increased band of working frequencies of acoustooptical metre of radio signal parametres.

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