CSMH-12.7-405 12.7 x 12.7 mm 50:50 (R:T) N-BK7 Dielectric Half-Mirror Cube Beamsplitter; t=12.7mm 390-410nm

The CSMH-12.7-405 is a dielectric half-mirror cube beamsplitter, designed and manufactured by OptoSigma. This beamsplitter is a crucial component in various optical systems, particularly where the need for precise beam splitting arises.

The beamsplitter is characterized by its 12.7 x 12.7 mm geometry, making it suitable for applications requiring a compact yet robust optical element. The beamsplitter's 50:50 (R:T) ratio ensures an equal distribution of the incident light beam, with 50% of the light being reflected and the other 50% transmitted.

The beamsplitter is constructed from N-BK7 Schott, a high-quality optical glass known for its excellent transmission properties and low auto-fluorescence. This material ensures the beamsplitter's durability and reliability in various optical applications.

The CSMH-12.7-405 operates within the wavelength range of 390-410nm, making it ideal for applications utilizing blue light. The beamsplitter's coating is another notable feature. Both the front and back are coated with ideal broadband AR, ensuring minimal reflection and optimal transmission. The left and right surfaces also feature the same coating, further enhancing the beamsplitter's performance.

The hypotenuse surfaces of the beamsplitter are coated differently. Hypotenuse 1 is coated with Opt CSMH-405, a specialized coating for this specific beamsplitter model. Hypotenuse 2, on the other hand, is coated with ideal broadband AR, maintaining the beamsplitter's high performance.