Characteristics of laser crystal glass
(1) Optical uniformity of multispectral/cleartran and standard CVD ZnS optics - refractive index error reaches ± 2 * 10 (-6), while ordinary optical glass uniformity has a refractive index error of ± 2 * 10 (-4); (2) the transmission loss at 1054 nm is less than 0.0015 cm (-1); (3) The OH root and platinum content in the glass is extremely low; The cost of a ytterbium-doped laser glass with a size of 500mm*300mm*50mm is not less than RMB 20,000. Laser glass is a solid-state laser material based on glass. It is widely used in various types of solid-state lasers and is the main laser material for high-power and high-energy lasers. The main advantages of high precision ZnS optics compared to laser crystals are: (1) Easy to prepare. By applying the process technology for preparing optical glass and improving it, it is possible to obtain a highly transparent and optically uniform glass, which is relatively easy to produce a large-sized work substrate material, and has a low cost, and a large volume and a high density of activated particles are used for high power. And important advantages of high energy lasers. (2) The matrix glass is easily changed. The composition and properties of the matrix glass vary widely, and the type and amount of activator added are not limited, so it is easy to develop into a series of laser glass varieties with various characteristics. (3) Easy molding processing. Using optical glass thermoforming and cold working processes, laser glass can be easily formed into various shapes, such as rods, sheets, wires, etc., and is ground into high-precision optical surfaces to meet the needs of various device structure developments. (4) Based on the characteristics of the glass structure, that is, short-range order and remote disorder, the structural defects in the glass have little influence on the properties of the glass and are easy to eliminate, so it is easy to obtain a working substance with uniform properties on the isotropic and large volume. . Since bismuth glass can generatewholesale large size optical grade sapphire optics at room temperature, the temperature quenching effect is small, and the quantum efficiency of the optical pump absorption effect string and luminescence is currently the main laser glass.