Almost all lasers need attenuation before pointing them at a camera for profiling because otherwise they are too strong. One either needs a beam splitter or a filter. The splitter, though a fine solution, allows for less adjustment than a filter. Until now there were only beam splitters for UV lasers but now Ophir-Spiricon has released special filters, the Neutral Density Laser Beam Filters for UV Wavelengths (UV-ND Filters).
The filters that existed before this new one are made of glass so they don’t work with UV-wavelength. On the other hand, the Ophir-Spiricon UV-ND filters use fused silica which can transmit at much shorter wavelengths (190-380nm).
To learn more about these new filters for UV lasers and the technology used to ensure smooth and accurate transmission through the filters to the beam profiler camera, read Ophir Optronics Announces New Neutral Density Laser Beam Filters for UV Wavelengths.
Please feel free to comment and add things you have on your list