Abstract
The noise of photodetectors based on mid-IR A3B5 photodiodes (PhDs) implemented in a transimpedance amplifier scheme is analyzed. Recommendations concerning the choice of amplifier elements depending on the dynamic resistance of PhDs are given. It is shown that, using modern low-noise amplifiers, it is possible to reach a potential limiting threshold sensitivity of photodetectors only using PhDs with dynamic resistances above 50 Ω.
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Original Russian Text © G.A. Gavrilov, B.A. Matveev, G.Yu. Sotnikova, 2011, published in Pis’ma v Zhurnal Tekhnicheskoĭ Fiziki, 2011, Vol. 37, No. 18, pp. 50–57.
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Gavrilov, G.A., Matveev, B.A. & Sotnikova, G.Y. Limiting sensitivity of photodetectors based on A3B5 photodiodes for middle infrared range. Tech. Phys. Lett. 37, 866–869 (2011). https://doi.org/10.1134/S1063785011090197
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DOI: https://doi.org/10.1134/S1063785011090197