Figure A2From: A study to develop a robust method for measuring the detection efficiency of free-running InGaAs/InP single-photon detectorsDetection efficiency \(\eta _{\mathrm{DUT}}\) of the DUT as function of the mean photon number per pulse. Red data are referred to raw data; i.e. without correcting the SPAD dead time, and green are corrected data according to Eq. (A.9). Error bars: expanded uncertainty of the measurementBack to article page