green laser pointer has been widely applying in fields such as medicine and project

As the laser beam energy and beam speed can be adjusted so the laser processing can be applied to different levels and scope. Currently, the accepted principle of laser processing are two: namely laser thermal processing and photochemical processing (also known as cold). Laser thermal processing means that when the laser beam to the surface, causing rapid heating, thermal properties of the object changes or the material melting evaporation.The receiver of  led flash light  has no capacity even it looks like a USB drive. Thermal processing of high energy density laser beam (which is to focus on the energy flow), irradiation in the surface to be machined on the surface absorb the laser energy, heat generated in the irradiated region to stimulate the process, so that surface (or coating ) temperature rise, resulting in abnormal, melting, ablation, evaporation and other phenomena. Photochemical processing means that when the laser beam is added to an object, high-density energy photon trigger or control the processing of photochemical reactions.
Of laser processing technology status and future trends, summarizes the existing problems and propose solutions. Keywords: laser processing CLC: TG665 0 Introduction Since the application of lasers in the 1960s since the advent of the first laser, the type of laser processing continuous development and improvement, has been formed laser marking, laser cutting, laser welding, laser hole, laser surface heat treatment, laser cladding, laser rapid prototyping, laser hardening, laser micro-manufacturing process a dozen applications.  green laser pointer  has been widely applying in fields such as medicine and project.Laser processing from electronic chips to cars, aircraft and ship manufacturing is an indispensable tool. It is compared with the traditional processing methods, is no contact, no force, heat-affected small, clean and processed into a number of in-plane processing methods.
Rare earth in the laser crystal laser crystal is composed of the crystal matrix and the active ion. Laser crystal laser performance and crystal matrix, activation of the ion features a great relationship. Known laser crystal can be roughly divided into fluoride crystals, the three categories of oxysalt crystal and oxide crystals. Active ions can be divided into transition metal ions, rare earth ions and actinide ions. Known for about 320 kinds of laser crystal, about 290 kinds of mixed rare earth as the active ion. Seen rare earth an important role in the development of the laser crystal materials. The customer wants to take some pictures for this kind of green laser pointer .