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Ultrafast Fiber Laser Opens Doors for Additive Manufacturing

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By taking advantage of instantaneous high-temperature plasma generation, high-temperature metals such as tungsten can be transformed.

JIAN LIU, POLARONYX INC.

Femtosecond (fs) lasers have long been a workhorse in subtractive manufacturing, prized for their unique ability to athermally ablate materials. They are commonly used in surface structuring, drilling and thin-film scribing. However, few thought that an fs laser could be used in additive manufacturing (AM). By taking advantage of instantaneous high-temperature plasma generation, a recently developed fs fiber laser can melt high-temperature metals such as tungsten. Employing the fs fiber laser, parts created using tungsten achieved 99 percent density. Moreover, researchers have shown that the...Read full article

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