The first is a diode-pumped solid-state laser (DPSS) Nd: YAG Q-Switch, in which duplication crystals are used to change the infrared wavelength of 1064 nm and switch it to the wavelength of the ultraviolet of 355 nm.

The shape of the ray is Gaussian, so the spot will be round and with the intensity of energy gradually decreasing from the center towards the edge. The beam can be focused on spots of the order of 10 µm.

In principle, like all solid-state lasers, these ultraviolet lasers are sensitive to temperature changes.

The second type of UV laser is a gas laser, the excimer laser. The wavelength of this laser depends on the type of gas mixture used and ranges from 180nm to over 300nm.

Copper vapor lasers generate radiation at a wavelength of 511 nm and 578 nm. The shape of the beam is Gaussian, which makes the laser suitable for the same range of applications as the solid-state ultraviolet laser.