| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an output monitor device of a laser diode for laser processing and a laser diode unit for the laser processing provided with the same capable of accurately detecting an output state of the laser diode for the laser processing without being affected by return light and performing the high quality laser processing. <P>SOLUTION: An output monitor device of a laser diode for laser processing detects intensity of output light from the laser diodes 9a and 9b with an optical system where the output light travels in a forward direction and a reverse direction, arranged on a traveling direction side of the output light from the two laser diodes 9a and 9b for the laser processing. The output monitor device has an optical combiner 18 which is positioned in a middle of the optical system, combines the output light of the two laser diodes 9a and 9b as well as outputs the combined light in an identical direction. The light combiner 18 has a selection output section 18a which outputs light in the forward direction but does not output the light in the reverse direction. The selection output section 18a of the light combiner 18 has detection means to detect the intensity of the output light only from the two laser diodes 9a and 9b. <P>COPYRIGHT: (C)2013,JPO&INPIT |
