Lasers, alongside 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 transformed optics but also influenced other scientific systems, including physics.
Moreover, its impact extends to all aspects of life, particularly industrial production and computers.
It can be said that lasers are ubiquitous in modern processing industries.
Why use blue light laser
When it comes to laser selection, infrared lasers are commonly used in industries for cutting, cladding, and welding operations. However, for non-ferrous metals such as copper, aluminum, gold, and silver, the absorption of laser light is very low. This often causes welding processes to run erratically, resulting in production errors and scrap.
To achieve a high absorption rate for such metals, it is ideal to use blue light with a wavelength of 450 nm.
Compared to infrared lasers, blue light has approximately 2 to 10 times better metal processing performance and is efficient for cutting, cladding, and welding metals like 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 lasers have a wide range of applications 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 ancient times, people have used copper to transport and store water, and to make pipes and barrels, as observed by the Egyptians and Greeks. They noticed that items made of copper had the ability to prevent water from deteriorating and protect wood from parasites.
Recent studies have shown that copper and copper alloys possess bactericidal and antibacterial properties, even in non-engineered metals. These materials have been found to be 99% efficient in killing viruses within 2-6 hours.
The use of blue light lasers to copper-plate frequently touched surfaces like handrails and door handles in facilities such as hospitals, nursing homes, schools, and public transportation can create a healthier environment by reducing the risk of bacterial and viral infections.
3. Laser repair of worn parts
Laser cladding technology meets a broad range of engineering needs for repairing high-tech engineering components that have long production cycles, high processing costs, and high prices. It also enables optimization of resource allocation while 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, blue light laser can have miraculous effects in treating depression, insomnia, and other diseases, as well as suboptimal health conditions, under certain levels of irradiation intensity and duration.
Heart disease treatment
Laser myocardial revascularization is currently considered as an effective alternative to conventional treatments for heart disease.
The thermal effect of laser light on myocardial tissue is utilized to create multiple micro-holes in the ischemic myocardial area using a high-intensity laser beam. This process directs blood from the heart chambers to the ischemic myocardial area, enhancing myocardial blood micro-circulation, and achieving the desired treatment outcome.
5. Marine resource exploration and underwater communication
When light enters the sea, its energy is attenuated by the action of seawater.
Seawater has varying attenuation coefficients for different wavelengths of light. Among the visible light wavelengths ranging from 200 to 800 nm, blue light between 400 to 450 nm has the smallest attenuation coefficient.
This principle has led to the widespread use of blue lasers for underwater communication, detection, and other applications. Blue lasers are also useful for detecting marine fisheries resources and undersea military activities.
Moreover, blue lasers can also detect the ideal ozone level.