DEVICE FOR RECORDING MICROHOLOGRAMS Russian patent published in 2013 - IPC G03H1/18 

FIELD: physics.

SUBSTANCE: device for recording microholograms has the following components: laser source of coherent radiation configured for time modulation of the flux; a source of non-coherent radiation configured for time modulation of radiation flux and operating synchronously with the laser source of coherent radiation; an optical system for dividing the initial beam into a signal beam and a reference beam; an optical system for forming a signal beam and modulation thereof with a calculated image; a spatial light modulator for modulating the signal beam with the recorded image; a Fourier lens configured to focus the incident modulated signal beam coming out of the spatial light modulator in the plane of light-sensitive material; an optical system for forming a reference beam, which performs the function of a reference beam optical delay line, giving the reference beam a shape in the plane of photosensitive material and forming a uniformly bright light field at a given point of the photosensitive material; an optical system for forming radiation from the source of non-coherent radiation, which is configured to convert and direct radiation from the source of non-coherent radiation to a given point; light-sensitive material configured to store the interference pattern of the focused modulated signal and reference beams; a mechanical positioning system which controls mutual arrangement of the light-sensitive material and the rest of the components of the device.

EFFECT: design of a device for recording microholograms, which enables to use a laser radiation source with high degree of coherence and low power while maintaining the required exposure time and improving the quality of the recorded holographic images.

9 cl, 8 dwg