Title:
WAVELENGTH BEAM COUPLING DEVICE
Document Type and Number:
Japanese Patent JP2019004121
Kind Code:
A
Abstract:
To provide a wavelength beam coupling device which can reduce the running cost of a device by preventing a diffraction grating or the like from suffering from a radiation damage, and lowering the frequency of exchange maintenance.SOLUTION: A wavelength beam coupling device according to an embodiment of the present invention comprises: a light source unit having a plurality of laser light sources arrayed therein, and emitting light of a predetermined wavelength width; a collimating unit for turning a laser beam emitted from the laser light source to a substantially parallel beam; a light-collecting unit for collecting a laser beam emitted from the collimating unit; a diffraction grating which the laser beam collected by the light-collecting unit enters; a resonator mirror disposed on an optical path of a diffracted beam of the diffraction grating, and having an optical axis coincident with an optical axis of the diffracted beam; and a first moving device which can move the diffraction grating to change a position in the diffraction grating, where an incident beam impinges thereon while keeping a diffraction grating plane in the same plane.SELECTED DRAWING: Figure 1
Inventors:
OYU TAKAHIRO
Application Number:
JP2017120155A
Publication Date:
January 10, 2019
Filing Date:
June 20, 2017
Export Citation:
Assignee:
NICHIA KAGAKU KOGYO KK
International Classes:
H01S5/14
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| JP2014216361A | 2014-11-17 | |||
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Foreign References:
| WO2016076279A1 | 2016-05-19 | |||
| US20040264515A1 | 2004-12-30 | |||
| US6192062B1 | 2001-02-20 | |||
| WO2018010984A1 | 2018-01-18 |
Attorney, Agent or Firm:
Isshiki International Patent Service Corporation