LBTEK mounts 25.4 mm Laser Line Polarizing Beamsplitter Cubes within a cube housing compatible with 30 mm cage systems. The engraved lines on the top of the housing indicate the optical path direction. This housing features M3 tapped holes on its sides for seamless integration with 30 mm cage systems. Additionally, it provides four SM1-threaded internal ports, allowing for simultaneous compatibility with 25.4 mm lens tubes. The bottom of the cage cube also includes an M4 tapped hole for mounting onto post assemblies.

LBTEK Laser-Line Polarizing Beamsplitter Cube (Common Wavelengths for Quantum Technologies) consists of two UV Fused Silica (UVFS) Right-Angle Prisms, one of which has a dielectric Polarizing Beamsplitter Coating on its hypotenuse. The dielectric Beamsplitter Coating transmits P-polarized light and reflects S-polarized light (Tp > 95%, Rs > 99.5%), and the transmission Extinction Ratio (ER) can reach Tp:Ts > 3000:1. This product series covers multiple wavelengths commonly used in Quantum Technologies, including 399 nm, 509 nm, 556 nm, 671 nm, 780 nm, 795 nm, 813 nm, and 1013 nm, and can meet the experimental requirements of mainstream systems in Quantum Technologies. All four sides of the cube can be used as entrance surfaces. To achieve optimal polarization performance, it is recommended that incident light enter through the right-angle face of the prism coated with the Polarizing Beamsplitter Coating.

LBTEK offers 10 design wavelength options of 405 nm, 532 nm, 633 nm, 780 nm, 808 nm, 830 nm, 850 nm, 1030 nm, 1064 nm, and 1550 nm. The prism marked with a black dot on top indicates that its hypotenuse face is coated with a dielectric polarizing beamsplitter coating, which reflects S-polarized light and transmits P-polarized light. While all four sides can serve as entrance faces to separate P- and S-polarization components, we recommend directing the incident light through the leg of the prism that features the polarizing beamsplitter coating to achieve optimal polarization performance.