A MOPA (Master Oscillator Power Amplifier) fiber laser engraving machine is an advanced type of laser engraver that utilises fiber laser technology along with a two-stage process for amplifying the laser signal.
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In the first stage, the master oscillator generates a highly coherent laser signal with the desired pulse shape and length. This signal is then amplified by the power amplifier, which increases the power of the laser signal while maintaining its original characteristics.
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This technology enables precise control over the pulse width and frequency, which is crucial for a wide variety of applications, including engraving, marking, cutting, and welding.
MOPA fiber laser machines offer superior performance in terms of engraving quality and flexibility compared to traditional fiber laser engraving machines. They can be used to engrave a broad spectrum of materials, including sensitive ones, without causing thermal damage, thanks to their adjustable pulse durations. Moreover, they can create different colours on certain metals, such as stainless steel, by manipulating pulse durations and frequencies.