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1 . Fiber Laser
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MF-C300A-SF/C500A-SF
Introduction Part
Inst
allat
ion and Preparation Part
Operating Part
Maintenance Part
Appendixes
Chapter 1
●
Overview of the Fiber Laser Welder
1 . Fiber Laser
Laser means the equipment to generate powerful light by amplifying light (electro-
magnetic wave) or means this light itself. Laser can be classified into various types
by light generating material. Among these types, a remarkable type as welding laser
in the industrial field is fiber laser for its beam quality. In this laser welder, laser is
generated in a fiber doped with Ytterbium (Yb).
The Yb fiber laser wavelength generated in this laser welder is near infrared rays that
are invisible to the human eye. Most of laser equipment for laser welding belongs to
class 4 laser that is the most hazardous in the classification of laser products speci -
fied in JIS. When the laser light greets the eye, it is focused by crystalline lens and
reaches the retina, thereby inviting a loss of eyesight. Do not look at the laser light in
any case. Because both beams and scattered light are hazardous, do not touch or
look at them.
To check where invisible laser is irradiated on the workpiece, red guide light is gener-
ally mounted in the laser equipment. When the output unit is provided with a CCD
camera, cross lines are generally displayed on the monitor and the cross point of
these cross lines is an irradiation point. In this laser, a red point appears on the work-
piece when guide light is output.
Introduction Part
Chapter 1 Overview of the Fiber Laser W
elder