A continuous wave: The CW range
Do you know the meaning of the two letters CW in this context? No? That's fine, as you have most likely had no contact with the concept of continuous waves before.
The term is used for radar systems, for example. Today it is much more common for high efficiency laser systems, though. The so-called CW range is simply the range inside whose parameters the laser can be adjusted, aligned and oriented.
So it describes a certain wavelength which can vary from laser to laser. As complicated as it sounds, it is actually very easy to explain.
But we certainly would not expect you to know this. The CW range is rather something for laser technology experts or scientists.