FIELD: optical instrumentation engineering. SUBSTANCE: device is supplemented with polarization analyzer. Doubler of laser radiation frequency is selected by conversion type providing for orthogonal polarizations of these two elements. It enables losses of energy of part of infrared radiation passed into exposure channel to be prevented at stage of preliminary heating by withdrawing it from path of exposure channel and guiding into zone of development of recording. EFFECT: enhanced quality and timeliness of recording. 1 dwg
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