Saturation
Definition: In terms of a photodiode, if the incident optical power continues to increase but the photocurrent output stops growing, it indicates that the photodiode has reached saturation. The saturation limit can be adjusted by reducing the resistance seen by the load or changing the reverse bias voltage applied. The saturation point represents the upper boundary of the photodiode’s linear range, while the lower boundary of that linear range is determined by the noise. Beyond this range, the photodiode operates in a nonlinear manner.
Alternative definition:
Synonym: photocurrent output limit
References: https://doi.org/10.1364/OE.422478https://www.thorlabs.com/images/TabImages/Photodetector_Lab.pdf
Related terms: Photodiode