BS023 70:30 (R:T) Non-Polarizing Beamsplitter Cube; 1 inch 700-1100nm

The BS023 is a non-polarizing beamsplitter cube designed for use in the 700-1100nm wavelength range, available from Thorlabs. This beamsplitter cube features a 1-inch cube side, making it compatible with a wide range of optical systems.

The beamsplitter has a reflection ratio of 70:30 (R:T), meaning that approximately 70% of the incident light is reflected while the remaining 30% is transmitted. This ratio is consistent across the entire wavelength range, ensuring predictable and reliable performance.

The BS023 is made from n-BK7 Schott glass, a material known for its excellent optical properties and high damage threshold. The beamsplitter surfaces are coated with Thorlabs' proprietary CBS BBAR700-1100 coating, which is designed to reduce reflection and improve transmission across the specified wavelength range.

The beamsplitter cube is designed with a volume shape, and it features coatings on all surfaces, including the front, back, left, right, hypotenuse 1, and hypotenuse 2 surfaces. This comprehensive coating ensures optimal performance, regardless of the direction of the incident light.