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Polarizing Beamsplitter Cubes

Polarization Beamsplitter Cubes are constructed by cemented two right angle prisms, the hypotenuse of one prism is coated with polarization dielectric coating.

When used with normal incident, un-polarized light, the incident beam is separated into two polarized beams, p-polarized component is passed straight through, s-polarized component is reflected out at 90deg.
  • product origin:

    China
  • shipping port:

    Fuzhou China
  • lead time:

    4 working weeks
  • payment:

    T/T Payment, Western Union
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  • description

1、What is a Polarizing Beamsplitter Cube?


A polarizing beamsplitter cube consists of two right angle prisms cemented together. The hypotenuse face of one prism is coated with a special multi layer dielectric coating. When circularly polarized or natural light enters the cube vertically, it separated into two linearly polarized beams. The transmitted beam is P-polarized while the reflected beam is S-polarized.  And when a linearly polarized light comes in, it similarly divided into two beams. But the energy ratio of the two outgoing beams depends on the polarization of the incident beam. Polarizing beamsplitter cubes are available for many laser wavelengths and broadband ranges.

 

2、How does a polarizing beamsplitter Cube work?


Polarizing Beamsplitter is designed to split unpolarized light at a specific Reflection/Transmission (R/T) ratio with unspecified polarization tendencies. 

Polarizing beamsplitters are designed to split light into reflected S-polarized and transmitted P-polarized beams.

 

3、What is a Polarizing beamsplitter Cube used for?


Beamsplitter is also a kind of filter, it is used to split or combine laser beam. However Polarization BeamSplitters are used to split or combine two perpendicular polarization laser beam. The performance of beam splitter depends on the coating specifications.  They are common components in laser or illumination systems. Also ideal for fluorescence applications, optical interferometry, or life science or semiconductor instrumentation. Light can be split by percentage of overall intensity, wavelength, or polarization state. 


To select a suitable beamsplitter, you need to consider the type, coating, transmission range and damage threshold. 



Specifications:
 
Material: BK7 Grade A Optical Glass
Dimension Tolerance: +/-0.2mm
Flatness: λ/4@633nm
Beam deviation: 3 arc min
Surface Quality: 60-40
Extinction Ratio: 100:1
Principal Transmittance: Tp>95% and Ts<1%
Principal Reflectance:Rs>99% and Rp<5%
Coating: Hypotenuse face Polarization Beamsplitter Coating
             All Input and Output face AR Coating
 
Standard
Wavelength(nm)
488,514.5,532,632.8,635,670,
780,850,980, 1064,1300,1550
Size (mm) 3.2x3.2x3.2 5x5x5 10x10x10 12.7x12.7x12.7 15x15x15 20x20x20
Part NO. UPBS032 UPBS005 UPBS010 UPBS127 UPBS015 UPBS020
 
Note: Other sizes, split ratio and coating are available upon request.


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