| 摘要 |
<p>A solid-state laser beam emitted from an Nd:YAG laser unit is superposed by a laser diode beam emitted from a superposition LD oscillating in a shorter wavelength band than the solid-state laser by using a dichroic beam splitter and then the superposed beams are introduced into a optical fiber. The superposition LD and the solid-state laser are adapted to irradiate an object to be processed in such a manner that their absolute irradiation positions and irradiation shapes are almost identical. Accordingly, it is possible to solve the problem of a high cost and high power consumption of a laser apparatus caused by a low energy conversion which is a disadvantage of a high-output high-luminance solid-state laser unit.</p> |
