Laser (LIDAR) and RADAR are two separate things. The lidar uses light and the RADAR uses radio/microwave frequency energy to measure speed. Maybe the ticket just had one box to check for both
If he was moving, it was probably radar, if stationary it could have been either.
LIDAR needs to be used stationary. The officer aims the beam of light towards a reflective part of the vehicle (licence plate, headlights, grill) to get the measurement. If the officer was stopped on the overpass, he could have been aiming out his window.