Influence of operating temperature on operating range of InSb detection system

Under the influence of operating temperature on detection range of InSb (PV) detection system, the paper gets the relation between operating temperature and D* by combination of carrier transport in detector and Johnson noise, and the detection range model of system in temperature variation is get by elevating the relation to system-level. On the basis of this model, the relation curves between detection range and temperature are simulated in a certain detecting condition, and the influence of operating temperature on detection range is analyzed. To validate the veracity of this model, the detection range experiment in different temperature condition is designed and built, and the conclusion which the model is truthfulness is drawn by data comparison and analysis of error. This conclusion is meaningful in improving system operating environment and method of application.