Thorlabs offers non-polarizing cube beamsplitters for Visible (400 - 700 nm), NIR (700 - 1100 nm), and IR (1100 - 1600 nm) light. Beamsplitter cubes are available with split ratios of 30:70, 50:50, or 70:30, and in sizes of 5 mm, 10 mm, 20 mm, and 25.4 mm.