Title:
OPTICAL RESONATOR AND LASER PROCESSING DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/163245
Kind Code:
A1
Abstract:
This optical resonator (2) that resonates a plurality of light beams having mutually different wavelengths comprises a light source (13), a diffraction grating (20), an output coupler (14), and an optical system (25). The light source (13) includes a plurality of light source elements (31, 32, 33) that respectively emit a plurality of light beams. The diffraction grating (20) diffracts each light beam at an angle corresponding to the wavelength of the light beam from each light source element (31, 32, 33). The output coupler (14) reflects a portion of the light beam diffracted in the diffraction grating (20) and returns the portion to the light source (13), and outputs the remaining portion of the light beam. The optical system (25) is arranged between the light source (13) and the diffraction grating (20), collimates each light beam incident from the light source (13) and emits each light beam to the diffraction grating (20). The optical system (25) has a diffraction surface that diffracts each light beam to adjust chromatic aberration across the wavelengths of a plurality of light beams.
Inventors:
ICHIHASHI KOUKI
Application Number:
PCT/JP2021/047969
Publication Date:
August 04, 2022
Filing Date:
December 23, 2021
Export Citation:
Assignee:
PANASONIC HOLDINGS CORP (JP)
International Classes:
H01S5/02255; G02B5/18; H01S5/14
Domestic Patent References:
| WO2020202395A1 | 2020-10-08 | |||
| WO2018167975A1 | 2018-09-20 | |||
| WO2020174752A1 | 2020-09-03 | |||
| WO2019163335A1 | 2019-08-29 |
Foreign References:
| US6414973B1 | 2002-07-02 | |||
| JP2016111339A | 2016-06-20 | |||
| US20130121360A1 | 2013-05-16 |
Attorney, Agent or Firm:
YAMAO, Norihito et al. (JP)
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