• Pulsed lidar

• Continuous wave light can be modulated (e.g. with an acousto-optic-modulator or AOM) to obtain pulses at high power intensities altering the transmitted power and concentrating this energy in a short space. The power intensity around this area can be described as a gaussian function centered around the frequency of interest, which is commonly used to describe the shape of the pulse.

http://vocab.ieawindtask32.org/wind-lidar-ontology/PulseShape