In recent years, the handheld laser industry has witnessed remarkable growth and innovation. Handheld lasers, with their unique features and capabilities, have found applications in a wide range of industries, revolutionizing traditional manufacturing and processing methods.​

1. Industrial Applications​

1.1 Laser Marking​

Handheld fiber laser marking machines have emerged as a popular choice in industrial marking. Built on the foundation of traditional desktop fiber marking machines, they offer the advantage of clear character marking and vivid product imagery. Additionally, their compact size, user – friendliness, and energy efficiency make them highly suitable for various industrial settings. They can mark a wide range of materials, including metals and certain plastics, and are extensively used in electronics, automotive, medical devices, and aerospace industries. For example, in the automotive industry, handheld laser marking machines are used to mark serial numbers, part numbers, and barcodes on engine components, ensuring traceability throughout the production process.​

1.2 Laser Welding​

Handheld laser welding has become a game – changer in the welding field. It allows for welding of up to 6mm thickness across a range of metallic materials, with a weld speed that is 4 times faster than traditional arc – welding methods. The low distortion and pre / post – cleaning function make it an attractive option for many manufacturers. It is suitable for applications where precision and quality are crucial, such as in the repair of tool steels, steam turbines, automotive components, and aero engines. In the repair of steam turbines, handheld laser welding can precisely weld small cracks and defects, extending the lifespan of the turbine components.​

2. Medical Applications​

2.1 Skin Treatments​

Handheld lasers are being used in the medical field for various skin treatments. For instance, a handheld laser device operating at 1450 nm has been developed for the treatment of facial wrinkles and acne. The wavelength of 1450 nanometers matches the water absorption coefficient in skin tissue, maximizing its effectiveness. It is also eye – safe, as the wavelength is absorbed by the cornea rather than the retina. This device has successfully completed clinical trials for the treatment of facial wrinkles and p. acnes. In the treatment of acne lesions, the heat shock from laser stimulation causes cells to enter a survival mode, shutting down their present metabolism and helping to heal the acne.​

2.2 Wound Healing​

Studies have shown that lasers can be effective in wound healing, especially for diseases like leishmaniasis. Handheld lasers can precisely thermally coagulate tissue to a well – defined depth, helping to heal skin lesions and ulcers. This makes them a potential treatment option for leishmaniasis, a disease transferred by desert sand fleas in the Middle East and Eurasia. Handheld lasers can be used by field medics in areas where leishmaniasis is prevalent, providing on – site treatment at a lower cost and risk.​

3. Nuclear Decommissioning​

High – powered lasers, currently used in automobile body welding, are being considered for nuclear plant decommissioning. A UK – based company, TWI, has been awarded a contract to develop handheld laser technology for this purpose. These handheld laser cutters can remove contaminated metal surfaces, cut up metal piping, and take apart process vessels in contaminated nuclear reactors. They can reach areas that were previously too tight or remote for robots to access. TWI is also working on a debris collection system to improve overall safety during the decommissioning process.​

In conclusion, the handheld laser industry is rapidly evolving, and its applications are becoming more diverse. From industrial manufacturing to medical treatments and even nuclear decommissioning, handheld lasers are playing an increasingly important role. As technology continues to advance, we can expect to see even more innovative applications of handheld lasers in the future.