Lasers, along with atomic energy, semiconductors and computers, were among the “four new inventions” of the 20th century, and have had a profound impact on the development of human civilization.
The emergence of the laser not only led to the transformation of optics, but also impacted other scientific systems, including physics.
In addition, its influence also extends to all walks of life, especially industrial production and computers.
It can be said that lasers can be found everywhere in modern processing industries.
Why use blue light laser
Regarding laser selection, it is more common to use infrared lasers in industry for cutting, cladding and welding operations, however, for non-ferrous metals like copper, aluminum, gold and silver the absorption of laser light is very low.
Because of this, welding processes often run erratically, and welding errors in production often result in scrap.
To obtain a high absorption rate, the use of blue light with a wavelength of 450 nm is ideal.
Compared to infrared lasers, blue light has about 2-10 times the metal processing performance and can efficiently handle cutting, cladding and welding of metals such as copper and aluminum.
In addition to this, the advantages of blue light laser technology include
- Low energy consumption costs
- Significantly reduced spatter and high weld quality
- Excellent cutting, welding and cladding speed and quality
- Reduced material absorption threshold and controllable processability
Applications of blue light laser
1. New energy vehicle manufacturing
In the field of new energy vehicle manufacturing, blue light laser has rich application scenarios in the production of automotive batteries and parts.
① Power battery positive and negative pole pillar welding
The materials of the power battery poles of new source vehicles are copper and aluminum
② Welding of motor stator
2. Copper plating for antibacterial effect
Since the ancient Egyptians and Greeks, people have used copper to transport and store water and to make pipes and barrels. They observed that items containing copper had the ability to prevent water from deteriorating and to protect wood from parasites.
Studies have found that copper and copper alloys are bactericidal and antibacterial against bacteria, even non-engineered metals, with 99% efficiency in killing viruses after 2-6 hours.
Using blue light lasers, copper plating on the surfaces of handrails and door handles that are frequently touched by people in facilities such as hospitals, nursing facilities, schools and public transportation will enable a public health environment that reduces the risk of bacteria and viruses.
3. Laser repair of worn parts
Laser cladding technology has a wide range of engineering needs for repairing engineering components with high manufacturing technology requirements, long production cycles, high processing costs and high prices, while optimizing resource allocation, saving precious and rare metal materials, reducing energy consumption and saving money.
Laser cladding repair is mainly used to repair the mold by laser cladding alloy powder.
4. New laser medical or healthcare industry
Mood disorders treatment
According to the results of relevant foreign studies, under a certain intensity of irradiation and irradiation time, blue light laser can bring miraculous effects for people to treat depression, insomnia and other diseases, or for subhealth states.
Heart disease treatment
Laser myocardial revascularization is currently an effective alternative to conventional treatment of heart disease.
Using the thermal effect of laser light and myocardial tissue, a high-intensity laser beam is used to make several micro-holes in the ischemic myocardial area, through which blood from the heart chambers is directed to the ischemic myocardial area, improving myocardial blood micro-circulation to achieve the purpose of treatment.
5. Marine resource exploration and underwater communication
When light enters the sea, the energy will be attenuated by the action of seawater.
Different wavelengths of light in seawater have different attenuation coefficients, for the visible light wavelengths from 200 to 800 nm in seawater, the attenuation coefficient of blue light between 400 to 450 nm attenuation is the smallest.
Based on this principle, blue laser is widely used for underwater communication, underwater detection, etc. It can also be used to detect marine fisheries resources and undersea military activities.
In addition, the blue laser can also be used to detect the optimum ozone level.
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