For normal polarization Beamsplitter cube(PBS), the extinction ratio of the beam from reflected channel is not good, not suitable for special application which has high request for reflected channel, like interferometer. Farview Optics can offer high performance two channel PBS, due to our unique coating design, we can improve the extinction ratio of reflected channel. High performance two channel PBS is always used in interferometer.
　

Widely Used In Interferometer Application
High Extinction Ratio for Both Transmitted & Reflected Channels
Good Wavefront Distortion for Both Transmitted & Reflected Channels
RoHS Compliant

Specifications

Material BK7
Dimension Tolerance ±0.2mm
Extinction Ratio Tp/Ts>1000:1, Rs/Rp>200:1
Surface Quality 60/40 scratch and dig
Clear Aperture >90%
Beam Deviation <3 arc minutes
Transmitted Wavefront Distortion <λ/8@632.8nm per 10mm
Reflected Wavefront Distortion <λ/8@632.8nm per 10mm
Principal Transmittance Tp>97%
Principal Reflectance Rs>99.5%
Coating Polarization beamsplitter coating on hypotenuse face
AR coating on all input and output faces
Damage Threshold >500mJ/cm2, 20ns, 20Hz, @1064nm