Fig. 4.

Noise measurement comparison. (a) The dark current and (b) temporal noise of the new (blue) and previous (orange) devices were measured. (a) The $y$ axis of the new device (left axis) and previous device (right axis) both have a range of 2000; however, the starting value in the previous device is much higher. The slope of the line is presented to show the rate of noise increase. The new device showed lower dark current. (b) The standard deviation across 128 consecutive frames under constant light signal was measured. The linear trendline is presented. The new device showed lower temporal noise. The pixel values are in units of DN converted by a 14-bit ADC.