Features of Operation of a Brightness Amplifier on Copper Bromide Vapors in the Bistatic Scheme of a Laser Monitor
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The influence of the brightness amplifier operation mode on images formed with a bistatic laser monitor is studied. The bistatic laser monitor is an active optical system with two active elements. A possibility of imaging remote (to more than 5 m) objects with this instrument is evaluated. It is shown that a change in the concentration of active substance (copper bromide) of the amplifier significantly affects the amplification of the input signal. The active substance temperature rise from 480 to 550°C increases the gain throughout the input signal range. A further increase in the temperature (up to 570°C) increases the gain only at a relatively weak input signal (less than 100 mW). The resulting amplification characteristics of the active optical system are described and compared with the parameters of images formed (distortion and brightness).
Keywords:laser monitor bistatic scheme of a laser monitor active filtration imaging brightness amplifiers gain remote objects
The authors are grateful to the head of the Laboratory of Quantum Electronics of the Institute of Atmospheric Optics, Siberian Branch, Russian Academy of Sciences, V.O. Troitskii for useful comments and discussion of the results.
The work on the study of properties of the bistatic laser monitor operation was supported by the Innovation Promotion Fund (project no. 11846GU/2017). Laser active elements were manufactured within the basic government funding (project no. AAAA-A17-117021310150).
CONFLICT OF INTEREST
The authors declare that they have no conflicts of interest.
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