1/f noise in short n-p/sup +/ diffusion-current-dominated (HgCd)Te avalanche photodiodes

The observed 1/f noise from Hg/sub 0.56/Cd/sub 0.44/Te avalanche n/sup +/-n/sup -/-p/sup +/ photodiodes in the forward and reverse current shows the following regions: (i) ohmic, (ii) diffusion-dominated short diode, (iii) series-resistance dominated, (iv) diffusion-dominated short diode with reverse-bias-dependent length, and (v) multiplication. The interpretation is based on Hooge's empirical 1/f noise formula and Kleinpenning's model for 1/f noise in short diodes.<
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