I think the second sentence is just describing the manufacturer and the pulse configuration of the one Nd-YAG laser. Sometimes a second laser is used to pump the output laser in pulse laser systems, but that’s an implementation detail and I’m not sure about the specific system used here.

You might be able to find a laser system to hack around with (they are used for tattoo removal). Probably not cheap.

Make sure to take laser safety super seriously if you work with lasers https://ors.od.nih.gov/sr/dohs/safety/laboratory/Pages/laser...