What is the term for the number of pulses transmitted each second from a laser device?

The term that refers to the number of pulses transmitted each second from a laser device is known as the pulse repetition rate. This concept is crucial in the context of laser speed measurement because it directly influences the accuracy and reliability of the speed readings obtained from the device. The pulse repetition rate determines how often the device emits a pulse of light, which is then reflected off an object to measure its speed. A higher pulse repetition rate allows for more frequent measurements and can enhance the precision of speed detection, making it a vital specification in speed enforcement tools.

Other terms listed in the options refer to different concepts. Pulse width refers to the duration of each individual pulse, scanning effect relates to the way in which data is collected or viewed across a surface, and data rate typically pertains to the speed at which data can be transmitted or processed but does not specifically describe the rate at which pulses are emitted. Understanding these distinctions helps in effectively interpreting the functioning and capabilities of laser speed measurement devices.