Abstract
Features of high-energy and high-contrast imaging in a bistatic laser active optical system (laser monitor) are considered. A system is designed, where a brightness amplifier has a larger volume than a lighting source, which provides for high-contrast imaging of microobjects. The influence of the time shift between a superradiance pulse of the amplifier and the time of signal arrival at its input on the contrast and energy of images formed by one pulse is ascertained for the first time. It is shown that artifacts resulted from the superluminous radiation “parasitic” reflection and scattering from optical circuit elements significantly reduce the contrast and power of signals generated. This effect can be suppressed by means of generation of an amplifier input signal before the generation of amplified spontaneous emission; the optimal delay is 1 ns.
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The work was supported by the Russian Science Foundation (project no. 19-79-10 096-P).
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Translated by O. Ponomareva
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Trigub, M.V., Vasnev, N.A. Features of Imaging in a Bistatic Laser Active Optical System. Atmos Ocean Opt 36, 185–190 (2023). https://doi.org/10.1134/S1024856023030119
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DOI: https://doi.org/10.1134/S1024856023030119