TFM-25.4C05-282 25.4 mm Dia. N-BK7 Laser Line Mirror; t=5mm Dielectric Multi-Layer 281.8nm

The TFM-25.4C05-282 is a high-quality laser line mirror from OptoSigma, designed with a 25.4 mm diameter and a thickness of 5mm. This mirror is specifically engineered for use with a wavelength of 281.8nm, making it an ideal choice for applications that require precise laser control in this range.

The mirror is made from N-BK7, a type of borosilicate glass known for its excellent optical properties. This material is particularly prized for its low coefficient of thermal expansion, high homogeneity, and excellent transmission in the visible and near-infrared spectral ranges. The use of N-BK7 ensures that the mirror provides reliable and consistent performance, even in environments with varying temperatures.

The mirror's coating is a dielectric multi-layer, designed to optimize reflectivity at the specified wavelength. The front surface of the mirror is coated with Opt TFM-282 AOI 45, a coating that provides high reflectivity and excellent durability. This coating is applied using advanced vacuum deposition techniques, ensuring a uniform and consistent coating that maximizes the mirror's performance.

The mirror's shape is that of a thin lens, which helps to minimize optical aberrations and ensures that the reflected laser beam is as precise and uniform as possible. This makes the mirror ideal for use in a wide range of applications, including laser machining, laser spectroscopy, and interferometry.