MPL is an acronym for Micro Pulse Lidar. A lidar instrument works in much the same way as a radar, by sending out packets of electromagnetic energy and measuring backscattered signal intensity from different ranges. In our lidars, however, we use green laser light instead of radio waves, allowing the instrument to see much smaller objects in the beam path, such as molecules and aerosols. Micro Pulse refers to the micro-joule level pulses of energy that the MPL transmits. This makes the unit smaller, cheaper, and safer than traditional lidars.