Response characteristic of 1-D PSD irradiated by pulsed light source

It is important to study the pulse response characteristic of one-dimensional PSD and rules of output photocurrent under the condition of pulsed light irradiation in order to compute the incident position of pulsed light accurately.The function of the pulsed light is presented,and the pulse response characteristic of PSD is discussed in the case of four different modes of pulsed light,and the phenomenon of pulse pile up is also studied.The results show that if the irradiation time of the pulsed light is much greater than the response time,the incident position of pulsed light satisfies the conversion formula of one-dimensional PSD.When the irradiation time of light is less than the response time,as long as irradiation time is 2.5 times greater than the time response constant,the shorter time of stopping irradiation is,the more preferable linear relation between incident position and output currents of PSD is.