The beam splitters are based on a customer request. The designs depend on the wavelength: If a variable beam splitter is developed for a wavelength of 532 nm, it does not function at another wavelength. For example, for 1064 nm designs, transmissions from 45% to 55% and 10% to 70% are available, or for the wavelength 753 nm transmissions from 4% to 20%.
Two standard sizes are offered: 45 mm x 22 mm and 70 mm x 22 mm. Other sizes are available but the maximum length of the substrates is restricted at 70 mm.
More Information http://www.lasercomponents.com/de-en/product/beam-splitter-cubes/