A, YAG series crystals 1, Nd: YAG crystal: Nd: YAG crystal is currently the most excellent comprehensive performance of the laser crystal. Laser wavelength 1064nm, widely used in military, industrial and medical industries. It can provide F1-20(D) ? 10-140 (L) mm laser rods and various slat components, Nd concentration of 0.6 ~ 1.1at.%. 2、Ce:Nd:YAG crystal For flash lamp-pumped lasers, the emission spectrum of the pumping lamp is actually a broadband continuum, with only a few spectral peaks matching the Nd ion absorption peaks, so the general lamp pumping only utilizes a small portion of the spectral energy, and the efficiency is low. The addition of Ce ions to form Ce:Nd:YAG on the basis of Nd:YAG crystals is to take advantage of the fact that Ce ions can absorb the photon energy in the UV spectral region very well and transfer the energy to the Nd ions in a manner without radiative leaps, thus increasing the utilization of the spectrum, so that the laser bar has a high efficiency, a low threshold, and a good repetitive frequency characteristic. In addition, it will be harmful to Nd: YAG UV radiation (long time UV radiation, will be formed in the Nd: YAG crystal color center, thus reducing the laser performance of the crystal) for the effective use, so the anti-UV radiation, and even can not use a special UV filtering quartz casing. Ce: Nd: YAG because of Ce doped crystals after the crystal is yellow, so it is also known as the yellow bar. We can provide F1-20(D) ? 10-140 (L) mm laser rods and various slat components, Nd concentration of 0.6 ~ 1.1 at.%, Ce concentration of 0.03 ~ 0.4 at.%. 3, Yb: YAG crystal Yb: YAG is trivalent ytterbium ions (Yb3 +) doped into yttrium aluminum garnet (YAG) matrix formed by a laser crystal to produce 1.03um near-infrared laser light, which belongs to the same matrix with the Nd: YAG, but due to the doping is different and lead to different growth processes. Ytterbium-doped YAG has a long fluorescence lifetime (0.91ms) due to its high quantum efficiency (91%), simple crystal spectrum, no excited state absorption and upconversion, and no fluorescence concentration burst, high doping concentration (up to 30at.% or more), and much wider absorption bandwidth (18nm) than that of Nd:YAG (<4nm), which can be efficiently coupled with the diode's pump wavelength. Under the same input power, the heat generation of Yb:YAG pumping is only 1/4 of that of Nd:YAG, and the physical and chemical properties of YAG substrate are the most excellent, so Yb:YAG has become one of the most compelling solid-state laser media, and LD-pumped high-power Yb:YAG solid-state lasers have become a new hot spot of research and are regarded as a major direction for the development of high-efficiency, high-power solid-state lasers. The main direction of the development of high-efficiency, high-power solid-state lasers. At present, industrial laser equipment such as: laser marking machine, laser engraving machine, laser welding machine, laser scribing machine, laser engraving machine, laser punching machine, etc. are used Nd: YAG laser bar.
[Edit]Commonly used YAG size
Currently used YAG size of its diameter from 1.5mm-14.0mm to 0.5mm up the ladder. Lengths from 15mm, 20mm, 25mm, 30mm, 35mm, 40mm, 45mm, 50mm, 55mm, 60mm, 70mm to 200mm can be combined.