Polarizing Beamsplitter Cubes (PBS)
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.
Specifications:
Material: BK7 grade A optical glass
Dimension Tolerance: +0.2, -0.2mm
Thickness Tolerance: ±0.2mm
Surface quality: 60/40
Clear Aperture: >85%
Flatness: λ/4 per 25mm@633nm
Parallelism: ±3'
Bevel:<0.25mm X 45°
Coating:
Hypotenuse surface :Polarization dielectric coating ,
Entrance/Exit surfaces :AR coating
1.Laser line (Extinction Ratio 500:1) ,AOI= 0°:
Tp>96% and Ts<0.2%
Rp<4% and Rs>99.7%
2.Broadband wavelength (Extinction Ratio: 200:1) ,AOI= 0°:
Tp>95% and Ts<0.5%
Rp<5% and Rs>99.5%
Typical Sizes:
Size(mm) Size(mm)
5.0x5.0x5.0 18.0x18.0x18.0
10.0x10.0x10.0 20.0x20.0x20.0
12.7x12.7x12.7 25.4x25.4x25.4
15.0x15.0x15.0 30.0x30.0x30.0
