| Overview:
Cube Beam Splitters (CBS) are typically constructed from two right angle prisms that are cemented together with an index-matched adhesive hypotenuse-to-hypotenuse with a dielectric coating in between which allows to split incident light at a designated ratio into two separate beams. For most applications, the prism legs are anti-reflection coated.
Beam Splitters are useful in interferometry, fiber optics, metrology, oceanography, seismology, chemistry, plasma physics, remote sensing, biomolecular interactions, surface profiling, micro fluidics, mechanical stress/strain measurement, and velocimetry.
General Specifications of Cube Beamsplitter: | Material | BK7 Grade A optical glass | | Dimension Tolerance | ±0.2mm | | Clear Aperture | >90% | | Flatness | λ/4@632.8nm | | Beam Deviation | <3 arc minutes | | Surface Quality | 60/40 | | Coating | Partial reflectance on hypotenuse face
AR coating on all entrances | | T/R | 50/50±5%, T=(Ts+Tp)/2, R=(Rs+Rp)/2 | | Damage Threshold | >500mJ/cm2, 20ns, 20Hz, @1064nm |
Standard Products of Cube Beamsplitter:
| Part No. | Material | Dimension
(mm) | Thickness
(mm) | T/R | Wavelength
(nm) | Polarization | | CBS0505-400-700 | BK7 | 5*5 | 5 | 50:50±5% | 400-700 | Avg | | CBS1010-400-700 | BK7 | 10*10 | 10 | 50:50±5% | 400-700 | Avg | | CBS1212-400-700 | BK7 | 12.7*12.7 | 12.7 | 50:50±5% | 400-700 | Avg | | CBS1515-400-700 | BK7 | 15*15 | 15 | 50:50±5% | 400-700 | Avg | | CBS2020-400-700 | BK7 | 20*20 | 20 | 50:50±5% | 400-700 | Avg | | CBS2525-400-700 | BK7 | 25.4*25.4 | 25.4 | 50:50±5% | 400-700 | Avg | | CBS0505-650-900 | BK7 | 5*5 | 5 | 50:50±5% | 650-900 | Avg | | CBS1010-650-900 | BK7 | 10*10 | 10 | 50:50±5% | 650-900 | Avg | | CBS1212-650-900 | BK7 | 12.7*12.7 | 12.7 | 50:50±5% | 650-900 | Avg | | CBS1515-650-900 | BK7 | 15*15 | 15 | 50:50±5% | 650-900 | Avg | | CBS2020-650-900 | BK7 | 20*20 | 20 | 50:50±5% | 650-900 | Avg | | CBS2525-650-900 | BK7 | 25.4*25.4 | 25.4 | 50:50±5% | 650-900 | Avg | | CBS0505-900-1200 | BK7 | 5*5 | 5 | 50:50±5% | 900-1200 | Avg | | CBS1010-900-1200 | BK7 | 10*10 | 10 | 50:50±5% | 900-1200 | Avg | | CBS1212-900-1200 | BK7 | 12.7*12.7 | 12.7 | 50:50±5% | 900-1200 | Avg | | CBS1515-900-1200 | BK7 | 15*15 | 15 | 50:50±5% | 900-1200 | Avg | | CBS2020-900-1200 | BK7 | 20*20 | 20 | 50:50±5% | 900-1200 | Avg | | CBS2525-900-1200 | BK7 | 25.4*25.4 | 25.4 | 50:50±5% | 900-1200 | Avg |
Coating Graphs of Cube Beamsplitter: | 400-700nm 50:50 Cube Beamsplitter 
| 650-900nm 50:50 Cube Beamsplitter 
| | 900-1200nm 50:50 Cube Beamsplitter 
| | Mount Options of Cube Beamsplitter: Star Optic also offers a variety of mounting solutions for our Cube Beamsplitter. Please refer to Optomechanical Mounts for information on mounting options and compatibility. If you are not sure which to select, please contact us, we will work with you to identify the best solution for your needs.
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