BS019 30:70 (R:T) Non-Polarizing Beamsplitter Cube; 1 inch 400-700nm

The BS019 is a high-quality non-polarizing beamsplitter cube, designed and manufactured by Thorlabs. This beamsplitter cube is part of Thorlabs' extensive catalog, featuring a robust design and reliable performance. The cube has a side length of 1 inch (25.4 mm), making it compatible with a wide range of optical systems.

The beamsplitter cube is designed to operate within the wavelength range of 400-700 nm, making it suitable for a broad spectrum of applications. The beamsplitter has a reflection ratio of 30:70 (R:T), meaning it reflects 30% of the incident light and transmits 70%. This ratio is consistent across the entire wavelength range, ensuring predictable and consistent performance.

The BS019 features a broadband anti-reflection coating (BBAR) on all surfaces, including the front, back, left, right, and both hypotenuses. This coating is designed to reduce surface reflections, improving transmission and reducing unwanted optical losses. The coating is specifically designed for the 400-700 nm wavelength range, ensuring optimal performance within this spectrum.

The beamsplitter cube is made from high-quality n-BK7 Schott glass, a material known for its excellent optical properties and chemical resistance. This material ensures the beamsplitter cube delivers high-quality, distortion-free optical performance.