Each pulse of laser light is characterized by a specific duration known as what?

The correct answer is pulse width. In the context of laser technology and speed measurement, pulse width refers to the duration of each individual pulse emitted by the laser. This characteristic is crucial because it can influence how accurately speed measurements are taken, as a shorter pulse width typically allows for better resolution and more precise measurements of moving objects. Pulse width is a fundamental parameter that determines how the laser interacts with the target, affecting the overall performance of speed measurement systems.

Other terms mentioned, like pulse repetition rate, denote how many pulses are emitted in a given timeframe, while pursuit time relates to the time taken to close the gap to a target, and trigger duration may refer to how long a trigger signal lasts in a system. These are distinct from pulse width and serve different functions in speed measurement technology.