Amada ML-3015AS, Operation Manual, Page: 23 / 204

1 . Fiber Laser
23
ML-3030AS/3015AS
Introduction Part
Inst
allat
ion and Preparation Part
Operating Part
Maintenance Part
Appendixes
Chapter 1
●
Overview of the Pulsed 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 1070 ± 3 nm of 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 specified 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 haz-
ardous, 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 Pulsed Fiber Laser W
elder