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3 minutes to read what is 355nm UV laser
Release time:
2023-11-17
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Foreword
What is laser?
What are the applications of laser?
What is355nmUltraviolet laser?
355nmultraviolet laser principle?
355nmWhat are the UV laser applications?
355nmUV laser market development prospects?
Laser
Laser refers to the narrow amplitude frequency of the light radiation line through the stimulated feedback resonance and radiation amplification, resulting in collimated, monochromatic, coherent directional beam. The laser originated20Century60In the early 1990 s, it was called atomic energy, semiconductors, and computers.20Four great inventions of the century.
Laser Applications
As a new energy, laser has been widely used in various fields because of its good directionality, high brightness and good monochromaticness. It mainly includes industrial, information, medical, commercial, scientific research, military and other application fields.
355nmPrinciple of Ultraviolet Laser
The origin of solid ultraviolet laser
It is the electrons in the atom that absorb energy, transition from low energy to high energy, then fall back from high energy to low energy, and release energy in the form of photons. And the laser, is to be lured (excited) out of the photon queue, the photon optical characteristics of the photon queue are the same, and the pace is consistent. The solid medium is through the infrared light or near-infrared light through the nonlinear frequency doubling crystal way one or more The UV laser is obtained after frequency conversion.
UV laser composition
The laser must have the above three parts, the working substance, the pump source and the optical resonator, and the laser with the solid laser material as the working substance. Under the action of the pump source, the working substance has a population inversion distribution and becomes an activated substance, thus having the amplification effect of light. A part of the amplified light is fed back to participate in the excitation, and the resonant cavity oscillates, and laser can be generated after certain conditions are met.
1, working material: the core of the laser, only the material that can achieve energy level transition can be used as the working material of the laser.
2. Pump source: Its function is to give energy to the working substance and excite the atom from low energy level to high energy level. Usually there can be light energy, thermal energy, electrical energy, chemical energy and so on.
3, optical resonator: make the stimulated radiation of the working material continuously; continue to accelerate the photon; limit the direction of the laser output.
355nmUV laser marking principle
The reaction mechanism of ultraviolet laser processing is realized by photochemical ablation,That is, relying on laser energy to break the bonding between atoms or molecules,Make it a small molecule gasification, evaporation. The focus spot is very small, and the processing heat affected zone is very small, so it can be used for ultra-fine marking and special material marking.
355nmUltraviolet Laser Application
Application fields: scientific research, laser marking, rapid prototyping, film etching, micro-hole processing, scientific research, laser measurement, laser communication, etc.
Marking process: UV laser marking can be applied to: plastic, glass, wood, crystal, circuit board, metal, jade and so on process manufacturing marking.
Laser cutting: UV laser equipment can be used in many fields of flexible board production, includingFPCExterior cutting, contour cutting, drilling, covering film window opening, soft and hard combination plate uncovering and trimming, mobile phone case cutting,PCBShape cutting and so on.
355nmApplication and Development of Ultraviolet Laser
by3CDriven by the application market, China'sultraviolet laserThe market is developing rapidly. In passing2017The market showed a straight-line growth trend in 2010,2018The market demand for UV lasers fell slightly in 2009, and many processing industries were slow to develop due to the epidemic,2019began to grow slowly every year, although not2017years of fire, but compared2018The year showed a small growth trend, which reflects the application and development trend of domestic ultraviolet lasers.
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