Optical machining apparatus

An optical cutting apparatus comprising:

• a first light source;
• a second light source;
• and
• a controller configured to control radiation of a first beam from the first light source and radiation of a second beam from the second light source,
• wherein
• the first light source is controlled by the controller to radiate the first beam onto a first position of a surface of a work in such a manner as to transfer heat by absorption of the first beam at the first position of the surface of the work at a temperature lower than a melting temperature of the work from the first position of the surface of the work to a second position of a surface of the work on an opposite side to the first position;
• and
• the second light source is controlled by the controller to radiate the second beam onto the second position such that a temperature of the work exceeds the melting temperature of the work in order to cut the work between the first position and the second position, in a state in which a temperature of the second position is raised by the transfer of the heat,
• a first optical axis of the first beam is oblique with respect to a normal of the work, a second optical axis of the second beam is not oblique as much as that of the first beam, and an angle between the first optical axis and the second optical axis is defined such that the first light source of the first beam is prevented from being irradiated with the second beam.