This article is cited in 10 papers

Limiting sensitivity of photodetectors based on A$^3$B$^5$ photodiodes for middle infrared range

G. A. Gavrilov, B. A. Matveev, G. Yu. Sotnikova

Ioffe Institute, St. Petersburg

Abstract: The noise of photodetectors based on mid-IR A$^3$B$^5$ 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 $\Omega$.

Received: 18.04.2011

 English version: Technical Physics Letters, 2011, 37:9, 866–869

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