The laser systems for detector calibration are largely usedin many experiments of particle and nuclear physics. They arefundamental to correct the response in the energy scale for theelectromagnetic or hadronic calorimeters systems. They arealso used to monitor the performance and timing properties ofthe detector. The laser facilities can be operated both withindedicated calibration runs (i.e. studies of linearity) or duringthe data taking to monitor the stability of the detector.Moreover, during the test/debug phase, the calibration facilitiesare required to generate simulated events with the samecharacteristics of the physics ones in order to reproduce therun conditions. The presence of a control system for a laserfacility becomes therefore very fundamental mainly for thecomplex and demanding calibration system.The main task of the laser control is to fire the light pulses,according the different operation modes, and to manage theinterface with the Trigger and the DAQ system of the ex-periment. It manages all the control activities of the monitorelectronics providing them the timing signals for data process-ing.This paper is organized as follows: in the Sec. II a typicalcalibration system for the light detector will be described; thelaser control functionalities and architecture will be discussed