Abstract
The paper presents the research and development of a low-volume brightness amplifier for imaging laser active optical systems (laser monitors) with a pulse repetition frequency (PRF) of up to 100 kHz. A small-sized active element and pumping source based on tasitron have been developed. The effect of the brightness amplifier’s operating features (concentration of CuBr and HBr) on the numerical characteristics of images obtained in the laser monitor has been studied. The optimal concentrations were determined, and it was proven for the first time that they should be 30% lower than what is needed for obtaining maximum laser power. It was shown that increasing the CuBr concentration leads to a decrease in the field of view. The effect of the one-pass amplification profile on the quality of LOAS-based images was experimentally determined. A small-sized active element (40 cm3) excited with a specific pulse energy input of 238 μJ/cm3 can be used to obtain images with a time resolution of up to 10 μs.
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