Since the birth of the first laser in the world in the 20th century, researchers have conducted various research and use of lasers. From 1963 to 1965, Co2 lasers and YAG lasers were successively invented. After in-depth study on the characteristics of lasers and the interaction mechanism between beams and materials, the use of laser skills began to be clear and concrete.

For more than 50 years, laser skills and their use have been rapidly developed, and combined with multiple disciplines to form a variety of skills, such as laser processing skills, laser detection and measurement skills, laser chemistry, laser medical, laser guidance. These interspersed skills and the emergence of new disciplines have greatly promoted the development of traditional industries and emerging industries, while giving laser processing skills a wider range of uses.

The structure of the Co2 laser is carried out from the sealed-off, glass tube structure to the lateral, longitudinal movable and waveguide type;

In 1917, on the basis of quantum theory, Einstein proposed that in the interaction between matter and radiation field, the atoms or molecules that make up the tribute can stimulate the emission or absorption of photons under the encouragement of photons. This indicates that if the number of atoms (or molecules) constituting a substance can be rotated according to the thermal equilibrium (Boltzmann) distribution of the energy level, it is possible to use Light Amplification by Stimulated Emission of Radiation (LASER). This is the title of the laser. Later theoretical physicists discovered that stimulated emission photons (waves) and encouraged photons (waves) have the same frequency, direction, phase, and polarization. These have laid the theoretical foundation for the presentation of lasers (a kind of lightwave oscillator). By 1960, Theodore H. Maiman of the Hughes Laboratories of the United States invented the world's first ruby solid-state laser (ruby laser) based on the results of quantum electronics; in 1961, Deruo The first gas laser, the helium laser, was invented; in 1962, the semiconductor laser was presented; in 1963, C. Patel invented the first co2 laser; in 1965, Bell Labs invented it. The first YAG laser;

With the development of the interaction between laser beam and data, the progress of laser output power, stability and reliability has gradually been used in practice, and has become an important branch of data processing in industrial production. Since the birth of the first laser, people have begun to explore the use of lasers in the field of data processing. Around 1965, YGA lasers and Co2 lasers were successively presented. Because these two lasers can generate appropriately high output power and energy, the use of lasers in the field of data processing becomes possible. In the early 20th century, with the continuous improvement of the quality of crystal data, the improvement of the performance of the concentrating cavity, the continuous improvement of the structure of the cooling system and the laser cavity, the beginning of the YAG laser became an important part of cutting, welding and annealing of micro-pieces. The light source is gradually used in production. In the late 70s, the structure of Co2 lasers was carried out from the sealed-off, glass tube structure to the lateral, longitudinal, and waveguide modes; at the same time, the method was encouraged to change from DC and AC.

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