Title:
SEMICONDUCTOR LASER DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/177001
Kind Code:
A1
Abstract:
A semiconductor laser device (1) is provided with: semiconductor laser elements (11a to 11d, 12a to 12d) that each emit a laser beam (L1, L2), said laser beams (L1, L2) having different wavelengths; collimator lenses (21a to 21d, 22a to 22d) for collimating the laser beams (L1, L2); a diffraction grating (50) on which the laser beams (L1, L2) are incident at different incident angles, that changes the travel direction of each of the incident laser beams (L1, L2) according to the wavelength, and that generates emission light (L10) formed by combining the laser beams (L1, L2); mirrors (41, 42) having reflecting surfaces that allow the laser beams (L1, L2) to be incident on the diffraction grating (50) at the incident angle corresponding to each of the laser beams (L1, L2); and a plurality of reflecting surfaces (311, 321) for guiding the laser beams (L1, L2) to the mirrors (41, 42).
Inventors:
FUKAKUSA MASAHARU
Application Number:
PCT/JP2021/005367
Publication Date:
September 10, 2021
Filing Date:
February 12, 2021
Export Citation:
Assignee:
PANASONIC CORP (JP)
International Classes:
H01S5/022; H01S5/14
Domestic Patent References:
| WO2018037548A1 | 2018-03-01 | |||
| WO2018167975A1 | 2018-09-20 | |||
| WO2019155668A1 | 2019-08-15 | |||
| WO2014190975A1 | 2014-12-04 |
Foreign References:
| JP2016096333A | 2016-05-26 | |||
| JP2014120621A | 2014-06-30 | |||
| US20150104180A1 | 2015-04-16 | |||
| US20160161752A1 | 2016-06-09 |
Attorney, Agent or Firm:
NII, Hiromori et al. (JP)
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