The development of high-brightness, high-power diode laser sources has opened new markets for direct-diode industrial applications. The output power and beam quality of diode laser systems are now suitable for many tasks that were only possible with solid-state and gas lasers. Much higher wall-plug efficiency, almost maintenance-free operation, long lifetime, compactness and wavelength flexibility make the diode laser a technology of choice for the following applications.
Laser diode based systems are perfectly suited for cutting thin sheet metals, particularly copper, gold and silver, which have very low absorption at wavelengths of CO2 and fiber lasers. They also cut fabrics, plastics, composites, wood and other non-ferrous materials. Since the wavelength of the diode laser can be selected for the maximum absorption of the particular material, the direct diode laser-based process offers high processing speeds with exceptional edge quality. AKELA offers a number of products for these aplications, such as ALC-915-50000-FM200.22, ALC-915-70000-FM400.22, and ALC-915-100000-FM400.22
Laser welding is a well-established process that is employed in many applications. Welding joints are produced by laser equipment at a very high welding speed, and demonstrate exceptional stability, high degree of localization, and very low distortion. The aesthetic quality of weld seam surfaces is also superior to any other welding process. Welding of plastics is of particular importance as it allows for non-contact welding with low thermal and mechanical loads. For example, plastic housings with built-in electronic components, which could be damaged in conventional processes, can be built. The diode laser can produce almost any wavelength that is strongly absorbed by plastics. In addition, the “flat top” beam profile without intensity peaks helps to eliminate local overheating that might damage the components. Furthermore, diode lasers do not require special absorption layers that may result in surface contamination. AKELA has developed several laser diode modules for welding applcations, including, but not limited to ALC-915-50000-FM200.22, ALC-915-70000-FM400.22. Our unique two-wavelength diode laser module ALC-2WL-60000-FM200.22 is particularly useful for butt welding of dissimilar plastics without the use of carbon black or other absorption promoters.
Local and Selective Heat Treating/Cladding
A unique advantage of the diode laser-based surface modification processes is that the output beam can conform to the shape of the surface requiring processing and enable an extremely high throughput. The laser-based process offers superior overall quality, reduced heat input, minimal part distortion, and better clad process control. As a result, a finer grain structure and smoother surface morphology leading to better corrosion resistance is produced with diode lasers. AKELA's fiber-coupled laser diode module ALC-808-100000 is a good choice for such applications.
Brazing and Soldering
Selective soldering with laser radiation is gaining ever broader industrial applications. Good control of the output power, and tightly focused laser beam provides unmatched capabilities in soldering temperature sensitive devices, very small components and soldering in poorly accessible areas. AKELA's laser diode modules are perfect tools for such applications. We offer modules at conventional wavelengths (ALC-808-25000 and ALC-915-30000) and eye safe wavelengths (ALC-1470-20000). For silver based solders, which poorly absorb infrared light, AKELA has developed ALC-445-20000.
Marking and Printing
Tightly focused diode laser beams can provide permanent, high-contrast marks on different types of metals, plastics, paper, wood and other materials. Several of our laser diode modules are well-suited for inexpensive marking tools. This includes ALC-808-25000 and ALC-915-30000, and eye safe ALC-1470-20000.
Additive Manufacturing (3D Printing)
Additive manufacturing technology has been recently developed to a stage where it can be routinely used to manufacture high-value components. Selective Laser Melting commonly utilizes single or multiple high power (100-400W) fiber lasers to raster scan, melt, and fuse layers of metallic powdered feedstock. A laser spot typically 100 μm in diameter, scanning at a speed of up to 2000 mm/s (dependent on material, layer thickness, etc.) is used to process layers of pre-deposited powder (typically 20–50 μm layer thickness). However this laser raster scanning method is high cost, energy inefficient and encounters significant limitations on output productivity due to the rate of feedstock melting. Direct Diode Laser melting provides a lower cost alternative and potentially higher productivity. The laser diodes can operate at shorter wavelengths than conventional fiber lasers, thus enabling more efficient energy absorption for specific materials. There is also almost unlimited possibilities for multi-channel laser diode systems that can significantly improve the productivity. AKELA offers mutiple laser diode modules for additive manufacturing, such as ALC-915-70000 and ALC-445-20000. We have also developed a multi-channel system for this application.
Lasers are ubiquitous in machine-vision applications. The light ouput of lasers structured into a dot, line, cross, circle, or other pattern is used from a simple positioning of the patient, to highly sophisticated quality control. AKELA's line of machine vision modules is specifically designed to address the need of these applications.
Higher brightness, lower cost of operation, longer life-time, expanded color gamut, and a more modular system architecture are some of the benefits of laser illumination. AKELA's RGB modules are the most powerful laser diode sources for laser projection. Choose from compact and inexpensive ALC-RGB-100 to the top of the line ALC-RGB-5000.