Abstract
Theoretical analysis of the spatial, noise, and energy characteristics of an amplifier has been performed in the mode of spectral and time selection using subnanosecond stimulated Raman Scattering gain of weak echo signals in crystalline active media that are known for high (up to 10–1 cm/MW) gain coefficients. The possibility to reach high gain values has been demonstrated for weak signals from objects at acceptable angular sizes of the field of vision of an amplifier. To provide a signal-to-noise ratio that exceeds unity over the entire field of vision, the number of photons at the input to an amplifier that is required has to exceed the number of its resolution elements. Accurate determination of the possibilities of recording of weak echo signals and quality of images of targets that are obtained using amplifiers under stimulated Raman Scattering requires additional special experiments.
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Original Russian Text © V.G. Bespalov, E.A. Makarov, D.I. Stasel’ko, 2016, published in Optika i Spektroskopiya, 2016, Vol. 121, No. 1, pp. 93–98.
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Bespalov, V.G., Makarov, E.A. & Stasel’ko, D.I. Image formation using stimulated raman scattering gain. Opt. Spectrosc. 121, 85–89 (2016). https://doi.org/10.1134/S0030400X16070079
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DOI: https://doi.org/10.1134/S0030400X16070079