The disclosed laser light source, which radiates laser light to an object to be machined, is characterized by being provided with: a generating unit that generates the aforementioned laser light; and an adjustment unit that, between said generating unit and the aforementioned object to be machined, adjusts the output density of the aforementioned laser light in a manner so as to decrease the output of the aforementioned laser light on the aforementioned object to be machined.
