Cage Cube Mounted Ø1" Beamsplitter
  8:92 or 45:55 Splitting Ratio for Beam Sampling or Beam Splitting Applications
  Available Wavelength Range from 400 nm to 5 µm
  30 mm Cage System Compatible
  SM1-Threaded Ports

These cube-mounted pellicle beamsplitters virtually eliminate ghosting since the second surface reflection is superimposed on the first one. However, they are extremely fragile due to their 2 µm thick nitrocellulose membrane, which exhibits less than ½ wave of variation at 635 nm across its 25 mm diameter. To provide maximum protection from damage, these beamsplitters are housed inside a 30 mm cage-system-compatible cube, are post-mountable, and have SM1-threaded access ports, making them compatible with our entire line of Ø1" lens tubes and accessories. Please Note: The sinusoidal oscillation resulting from thin film interference effects has been averaged for the plot shown under the Graphs tab. The cubes are M6 x 0.5 threaded, but adapters are included for 8-32 or M4 mounting.

• Compatible with 30 mm Cage System and SM1 Lens Tubes
• Four SM1-Threaded Ports
• Cubes are Post Mountable
• Accepts 1" Cubes and 25 mm Right-Angle Prisms
• Prism Alignment Pins Provide Accuracy of ±20 arcmin

The CM1-4ER(/M) Empty Cage Cube Mount accepts Ø1" optics. The optic is clamped within the CM1-4ER(/M) by tightening three screws. If you ever need to swap the optic in this mount or to use the optic in a different application, simply loosen the three screws to release the optic. The cube is M6 x 0.5 threaded on the bottom, but an adapter is attached for either 8-32 or M4 mounting to Ø1/2" Posts. The image to the right shows a penta prism mounted in a CM1-4ER with the outer housing removed.

• Connect Two 1.5" Wide Cage Cubes Side by Side

The CM1-CC cube connector allows two or more CM1 style cubes to be connected as shown in the image to the right. The current CM1 series, empty cubes, empty dichroic cubes, mounted beamsplitters, and mounted turning mirrors are all compatible with the cube connector.

Alignment Pins
Please note that the connector requires drilled holes on the cube face next to the SM1-threaded (1.035"-40) ports, as the cube connector has alignment pins. If you have an older cube and would like it updated for free, please contact Technical Support. Alternatively, the alignment pins are press-fit inside their mounting holes, and can be pressed out for use with un-drilled cubes.