What does pulse duration refer to?

Pulse duration specifically refers to the interval between the beginning and the end of a single pulse of light emitted by a laser. In this context, it captures the precise time during which the laser light is actively emitted, which begins with the initial transition of the light and concludes once that pulse has completed its delivery. This measurement is crucial in laser applications, as it can influence the effect of the laser on biological tissues or other materials being treated.

Understanding pulse duration helps in predicting the thermal and mechanical effects generated in the target area, as a shorter pulse duration typically results in less heat buildup, which can be beneficial for certain dermatological procedures. The other options refer to different aspects of laser operation or effects but do not specifically define pulse duration as accurately as the chosen answer.