Additionally pulsed light has the ability to deliver light at high peak power for deeper penetration. In applications where heat and prolonged exposure to UV light could be damaging to the product, pulsed light is the ideal solution. Pulsed light delivers more energy faster, and at lower temperatures. In certain curing applications using pulsed light is more advantageous to the product than continuous light. Pulsed UV lamps are designed to provide high intensity bursts of UV light. Pulsed light is used in many applications because it draws attention for safety/hazard warning, has the ability to penetrate surfaces in UV curing and phototherapy applications, and can minimize damage to materials while eradicating microbes in germicidal and other applications.
The amplitude is the maximum or peak output during a pulse which can be stated in optical units such as lux, W/cm2, Watts, candela etc. Pulse duration is the interval between the time, during the first transition (rise), that the amplitude of the pulse reaches a specified level of amplitude, and the time the pulse amplitude drops (fall), on the last transition, to the same level.
Hertz (Hz) is the SI base unit used to define cycles per second. Frequency of a pulse of light is most often stated in hertz. To select a system for the measurement of pulsed light it is often necessary to know the parameters of the sources output. While others are controlled by programmable power supplies that can change not only the frequency and duration but also the amplitude. Some pulsed light sources are designed to have a fixed frequency and duration. Also referred to as strobe, pulsed and blinking light, flashing light is the rapid, repeated change in brightness of light over time.
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