There are many kinds of lasers, and semiconductor lasers themselves can also be called laser modules. The fiber-coupled laser output of semiconductor lasers is also called laser module, and the beam-shaping laser output combined by multi-channel semiconductor lasers is also called module!

In solid-state laser, crystal, resonant cavity and pump source also constitute the laser module.

In fiber laser, fiber grating, gain fiber and pump source together constitute the laser module!

Not to mention carbon dioxide laser and chemical laser, your module is too awesome, how to answer it? Your laser is too wide. What kind of laser is this?

It would be better to ask questions accurately before asking them.