CSM25-20-550 20 x 20 mm 25:75 (R:T) N-BK7 Dielectric Cube Beamsplitter; t=20mm 400-700nm
- Type
- Beam Splitter
- Subtype
- Cube BS
- Brand
- OptoSigma
Properties
- Shape
- Volume
- A
- 20 mm
- B
- 20 mm
Material
- Name
- N-BK7
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.5185223876207927
- λ
- 550 nm
- B1
- 1.03961212
- C1
- 0.00600069867 μm2
- B2
- 0.231792344
- C2
- 0.0200179144 μm2
- B3
- 1.01046945
- C3
- 103.560653 μm2
CSM25-20-550 20 x 20 mm 25:75 (R:T) N-BK7 Dielectric Cube Beamsplitter; t=20mm 400-700nm
The CSM25-20-550 is a high-quality beamsplitter from OptoSigma, designed for optimal performance in the 400-700nm wavelength range. This beamsplitter is a cube-style dielectric beamsplitter, characterized by its robust N-BK7 Schott material and broadband anti-reflective (AR) coatings.
The beamsplitter's geometry measures 20 x 20 x 20 mm, with each face coated with ideal broadband AR for optimal transmission and minimal reflection. The hypotenuse faces, specifically hypotenuse 1, feature an OptoSigma CSM25-550 coating, while hypotenuse 2 is coated with ideal broadband AR. This unique coating configuration ensures high transmission and reflection ratios for the beamsplitter.
The physical data of the CSM25-20-550 indicates a reflection ratio of 0.25 (25%) and a transmission ratio of 0.75 (75%). These ratios are consistent across both the front and back faces, as well as the left and right faces, ensuring uniform performance regardless of the incident beam's direction.
