High gain avalanche photodiode (APD) arrays in flow cytometer opitical system

The basic principles of flow cytometer are introduced, on the basis of diode pump solid state laser (532 nm) as a excitation source and a high gain avalanche photodiode (APD) arrays as a light detector, a verification opitical system is built. Then, Spherotech Rainbow Calibration Particle RCP-30-5A is used to evaluate the performance of the opitical system, the fluorescence PE signal histogram of RCP-30-5A microshphere shows that the number of individual peaks is close to eight, which is close to the world advanced level.