A system and method to control non-coherent pulsed light, the system including a lamp to produce non-coherent light energy in a pulsed mode, a current supply to provide energy to the system, and a switching module to control the spectral distribution and/or light intensity in the non-coherent pulsed light energy during a pulse of non-coherent light. The system may include a controller unit to control pulse parameters for a selected treatment, based on illumination data received from the light sensor. The system may include one or more changeable filters to modulate the pulses supplied to the lamp during a pulse.
