Fiber Laser Amplifier Technology

In the laser room, Staufer and Reiter through the monitor to observe the process. "We spent a whole week hand-welding the racks outside, and then we were determined to improve efficiency," says Reiter. "He soon discovered that laser welding is the right solution. "This welding process is much faster because we only need a welding, unlike arc welding must be completed little by little, and we can use 200mw laser pointer preheating material, automatic processing is also easier to ensure quality." Therefore, he will As a solution, as solution A, he also prepared a solution B - with the traditional MAG welding robot with the automatic solution. "But scenario B requires preheating and subsequent stress relief heat treatment," says Reiter, so no one wants to use Option B. But there is a big problem with Option A, as Staufer says: "We have delivered more than a hundred lasers, but the thickest sheet before is only 10mm."

Raimund Geh liked the challenge. His company, Femitec GmbH, is located in Gösthofen near Augsburg and specializes in welding system design. He explained his approach to the problem: "If a robot equipped with a 10000mw blue laser welding head can not reach the solder joint, we can replace that part of it." His idea was to use a positioner with a chuck. "We are convinced that this will allow us to weld in the flat welding position." Geh and his team developed a sophisticated simulation system to test their theory, the next step is to put it into practice. Yaskawa Europe Co., Ltd. is a leading manufacturer of drive technology, industrial automation and robotics, dedicated to transforming the company vision into reality. Otwin Kleinschmidt, head of project management, tilted the palm of his hand at a key 45 degrees, then smiled and said, "The theory is simple: the positioner plus the chucking device is just that big."

However, fiber amplifier technology has been slow since then, in part because fiber bandwidth and associated technologies such as wavelength division multiplexing have been able to meet the banner and future bandwidth requirements. Relatively speaking, the development of semiconductor amplifier technology in the development of more than a decade ago is relatively slow, the relevant research is also more limited. But with the new wave of wearable and Internet of Things economic development, more and more detectors, sensors, small low-power electronic most powerful laser pointer components are more and more attention. For example, the latest Apple Watch heart sensor is based on LED light technology. Among these optoelectronic components, semiconductor amplifier technology has played a pivotal role. New semiconductor amplifiers are critical to achieving miniaturization, low power consumption and high efficiency of the corresponding components.

Semiconductor Optical Amplifier is a kind of optical amplifier. An optical amplifier is a subsystem product that amplifies an optical signal in optical communications or other optical applications. The principle of an optical amplifier is basically a 30mw laser pointer-based stimulated radiation that achieves amplification by converting the energy of the pump source into the energy of the signal light. Pumping categories are mainly light pumped and electrically pumped. The current study of a wide range of optical amplifiers is an optical fiber amplifier. It uses a pump that is pumped light. Since the commercialization of fiber-optic amplifiers in the 1990s, fiber-optic amplifiers have greatly changed the fiber-optic communications industry and are one of the reasons for the direct explosion of the Internet at the end of the 20th century.

In contrast, the wide-waveguide semiconductor amplifier expands the equivalent optical aperture so it is not susceptible to catastrophic optical mirror damage. The most common of these is an optical amplifier based on a tapered geometry. This optical amplifier amplifies the optical aperture while avoiding optical aperture to avoid catastrophic optical mirror damage, but its shortcomings are often affected by filamentation, and the beam is multimodal, resulting in an optical quality that is usually not high. Another common is the array of 300mw laser pointer amplifiers (Phased-array laser). It utilizes an array of multiple direct waveguide semiconductor amplifiers to achieve increased power by photopolymerization. However, the disadvantage of this structure is that external optical components are required to realize photopolymerization, so that miniaturization can not be achieved.