Shanghai Optics is as one of the leading optics components manufacturers from China. These thin film cube Beamsplitters combine the excellent characteristics of the Laser Polarizing Beamsplitters previously described with the advantage of broadband application. The polarizing film is fully protected within the cube making them durable and convenient to use.

Three wavebands have been chosen to cover most general applications: 450-680 covers the visible spectrum and a wide selection of laser wavelengths, 650-850 covers most visible range diode lasers and 1300-1600 covers most telecommunications band diode lasers. Although these Polarizers will work well over the entire broadband specified they are manufactured to laser performance standards.

Factory Standard

• Material: Schott, Ohara, CDGM Optical Glass, Corning fused silica, JGS1, JGS2
• Surface flatness: λ/4
• Dimensions: +0.1 mm
• Beam deviation: < 5 arcmin
• Surface quality: 40-20
• Extinction ratio: 100:1

Coating: Broadband Anti-Reflection coating on faces

Contact us for manufacturing limit or custom specifications.

These are thin film Polarizers constructed as a cube. Thin film polarizers utilize the polarization which occurs on reflection from a plane surface. By combining a large number of such surfaces in a stack it is possible to obtain useful extinction ratios.
The s-polarization is more than 99% reflected while the p-polarization can be suppressed in the reflected beam and become 95% transmitted. Thin film Polarizers can be optimized for a particular wavelength to give superior performance for laser applications.

Factory Standard

• Material: Schott, Ohara, CDGM glass, Corning fused silica, JGS1, JGS2
• Surface flatness: l/4 Lambda
• Dimensions: +0.1 mm
• Beam deviation: 1 arcmin
• Asymmetry: 1°
• Surface quality: 40-20
• Coating: Narrowband Anti-Reflection coating on faces
• Extinction ratio: Ts<1×10-2 Rp<2×10-2
• Damage threshold: <100mJ/cm2 in 10ns @1064nm

Contact us for manufacturing limit or custom specifications.