SU1210143A1 - Device for magnetooptic reproducing of magnetic signal patterns - Google Patents

Abstract

The invention can be used in the technique of magnetic recording and makes it possible to increase the sensitivity to the magnitude of the scattered field of magnetic sound recordings due to the use of resonant recording media. The light beam, having passed through, the polarizer 2 and the translucent mirror 3, is focused by the lens 4 onto the ferrite-garnet film 5, applied onto the wire of a glass substrate 6. The glass 1 to the substrate and the conductive mirror non-magnetic film 9 form a capacitor, plates which are connected to a source 11 of a variable electromagnetic field. The amplitude and frequency of the alternating magnetic field acting on the ferrite-garnet film provide a ferromagnetic resonance, the intensity of which will be determined by the field recorded on the magnetic tape 7. The light flux reflected from the mirror non-magnetic film 9 goes to the analyzer 8, which converts spatial modulation by polarization to the corresponding intensity modulation in accordance with the recorded waveform on magnetic media. 1 il. S (O Yu Yu 4; co

Description

The invention relates to radio electronics and can be used in the technique of magnetic recording.

The goal is to invent a higher sense. the height to the magnitude of the scattered field of tviar- ny waveforms due to the use of resonant recording media.

The drawing shows a structural diagram of the device.

The mouthpiece contains a light source 1, a polarizer 2, a translucent mirror 3, an objective 4, a ferrite-garnet film 5, a substrate of conductive glass 6, a magnetic tape with a reproducible signalgram 7, an analyzer 8, a specular conductive non-magnetic film 9, a photographic recorder 10 and a source of 1 variable electromagnetic field.

The device works as follows.

The light from source 1 passes through the polarizer 2, stapled linearly polarized. Then, through the semitransparent mirror 3, the light beam hits the lens 4, which focuses it on the ferritic early film 5, the thicker conductive surface of the infrared layer 8. The curler 5 with the substrate 6 and the mirror film 9 touches the working film. a layer of magnetic film 7. The film 5 is affected by the averaged .v eiiiioe magnetic field of the capacitor, which is excited both: ohm i 1, frequency and amplitude; ) e; onance The field, jaiiifcaniioe on magnetic tape 7, will determine the intensity

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.chzmen lii.in this magnetization floor. 1 penetrate the ferrite-garnet b) film 5 and reflected from the conductive mirror

of the film 9, the light undergoes a spatial modulation of its polarization in accordance with the spatial structure of the siglogram recorded on a magnetic tape 7. After that, the light again through the lens and a transparent mirror enters the analyzer 8, which converts the spatial modulation by polarization to the corresponding intensity modulation. Thus, at the output of the device we will have light modulated in accordance with the recorded on a magnetic carrier signalogram in this area.

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Claims (1)

Invention Formula A magneto-optical device for reproducing magnetic waveforms containing a light source, a polarizer located along its beam, a translucent mirror, a lens, a ferrite-garnet film deposited on a glass substrate, and a tape with a waveform, as well as an analyzer and a photographic recorder arranged along a beam reflected from a semitransparent mirror, characterized in that, in order to increase the sensitivity to the magnitude of the scattering field of magnetic signal recordings, due to the use of resonant recordings units, and a glass substrate made of glass tsdego wire on ferrite garnet film deposited specular ne.magnitna conductive film, and a source of alternating electromagnetic field is connected to the capacitor plates formed by the glass substrate and the conductive nonmagnetic film mirror.