In the lab we have a 150w lasercutter from GWEIKE. It can can be used for cutting and engraving of non-ferrous materials. It is importand to know what kind of materials to use, as some plastics release poisonous fumes when beeing or engraved. Below you will find the specs of the machine and info on what materials that is recommend (and which is not) and settings to use on them. As most lasers and materials act different, put in some time on testcuts to find the setting best suited for you.
The software used for the Laser is Lightburn.
You can find manuals and tutorials here: https://lightburnsoftware.com/