Fig. 7: HgCdTe APDs performance.

a the experimental gain versus bias for selected cut-off wavelengths for DRS electron-initiated APDs at 77 K together with extra measured data points taken at ∼77 K⁵¹ and LETI e-APDs at 80 K⁵⁹, b constant F(M) ~ 1 versus M at 80 K for 4.3 μm cut-off wavelength APD¹³⁵