Collect the back reflection light in the isolator and monitor it with a photodiode. The real-time output of the sensor is provided to the user for use in process monitoring, optimization and control (such as perforation detection), or tool calibration (such as beam position and focus).
Other characteristics of laser pointer outlined include improved cutting and welding performance. These lasers can provide modulation rates up to 100kHz and rise and fall times of less than 5μs. These functions allow faster perforation, faster processing of fine features, and better processing quality through the smallest heat-affected zone.
Most multi-kilowatt fiber laser systems adopt an architecture that combines the outputs of multiple low-power fiber lasers, resulting in significant disadvantages in cost, performance, maintainability, upgradeability, and compliance with technological advancements. “Bell added, “We introduce a novel kilowatt fiber laser architecture that solves these problems by placing the pump diode and driver in a separate pump module and the gain fiber in a configurable gain module. , Can produce more than 4kW of output power. ”
These lasers have adjustable beam quality (BPP≥1.1mm-mrad) and have been used in high-quality cutting and welding of low carbon steel, boron steel, stainless steel, aluminum, brass and copper, and have also been used in emerging applications. It can be used in additive manufacturing, surface texturing and engraving.
According to the description of the Director of Material Processing Marketing of American Coherent Company, the first generation of fiber green laser pointer are directly based on the telecom platform to expand to higher power on a large scale. They use a large number of individually pumped laser diodes, each of which uses independent fiber coupling and is permanently fused to together.
This method of obtaining higher power has several limitations. “He said, “Especially all parts are permanently welded together. If a component fails or deteriorates, there is no way to replace it. For example, early products were very sensitive to back reflections from metal processing. If the fiber fusion splice, pump diode, transmission fiber, or any other laser component is damaged due to this back reflection, the laser must be repaired or replaced at the factory, which will affect the uptime and production efficiency.