Title:
LASER LIGHT SOURCE DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/066868
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a laser light source device with which it is possible to reduce generation of an interference fringe and speckles, and to reduce temperature increase due to laser oscillation. The laser light source device comprises: a base; a plurality of semiconductor laser elements which are respectively separately held on an upper surface of the base and which emit a plurality of beams having polarization direction aligned in one direction; and a polarization conversion unit which causes the polarization directions of at least some of the plurality of beams to be rotated, thereby introducing a disturbance such that the polarization directions of the plurality of beams are not aligned in one direction.
Inventors:
KIDA HIROSHI (JP)
Application Number:
PCT/JP2019/036888
Publication Date:
April 02, 2020
Filing Date:
September 20, 2019
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
H01S5/0239
Domestic Patent References:
| WO2015162767A1 | 2015-10-29 | |||
| WO2017017864A1 | 2017-02-02 | |||
| WO2015111145A1 | 2015-07-30 |
Foreign References:
| JP2003198031A | 2003-07-11 | |||
| JP2016051902A | 2016-04-11 | |||
| JP2014138116A | 2014-07-28 | |||
| US20130100974A1 | 2013-04-25 | |||
| JP2018004868A | 2018-01-11 |
Attorney, Agent or Firm:
YOSHITAKE Hidetoshi et al. (JP)
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