Compared with beamsplitter plate, Non-polarizing beamsplitter cube has the following advantages:             
Identical path lengths for both the reflected and the transmitted beams               

The transmitted beam is neither displaced nor deflected.               

Stable and compact.           

Easy operation            

Easy to Mount/Align             

The smallest size we can supply is 0.8x0.8x0.8mm.

                                   

Characteristic

Material: N-BK7 Grade A Optical Glass                 

Beamsplitter Coating for: 400 - 700nm, 700 - 1100nm, 1100 - 1600nm, etc  

Split Ratio(R:T): 10:90, 30:70, 50:50, 70:30, or 90:10, etc

AR-coatings: on all input and output faces                                                                                                                            

General Specifications:

Cube Size	5mm , 10mm , 12.7 mm , 20 mm , 25.4 mm, upon request
Wavelength Range	400 - 700 nm	700 -1100 nm	Other range available
Material	N-BK7
Split Ratio(R:T)	50:50		Other ratio available
Reflected Beam Deviation	90° ± 5 arcmin
AR-Coating Reflection	Ravg <0.5% @ 0 degree AOI  all input and output face
Overall Performance of 50:50 Split Ratio	Tabs= 47 ± 10%, Rabs= 47 ± 10%,  Tabs + Rabs > 90% |Ts - Tp| < 10% and |Rs - Rp| < 10%	Tabs = 47 ± 10%, Rabs = 47 ± 10%, Tabs + Rabs > 90%, |Ts - Tp| < 10% and |Rs - Rp| < 10%
Dimension Tolerance	+/- 0.2mm
Surface Quality	40-20 scratch and dig
Surface Flatness	λ/4  up to  λ/ 8 @ 633 nm
Wavefront Distortion Error	< λ/4 @ 633 nm
Clear Aperture	>80% of Entrance Face

                                                        50:50 Visible 400-700nm Beamsplitter cube

  

                                                         

                                                     50:50 NIR 700-1100nm Beamsplitter cube