Title:
LASER DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/137136
Kind Code:
A1
Abstract:
The present invention provides a laser device which is capable of achieving higher output or more iteration even in cases where a gain medium has a high surface roughness. This laser device is provided with: an excitation light source; a light collection optical system which collects excitation light output from the excitation light source; a gain medium which receives excitation light collected by the light collection optical system and outputs emission light; a transparent member which has a lower surface roughness than the gain medium and transmits emission light output from the gain medium; a supersaturated absorber which has a transmittance that increases with the absorption of the emission light that has passed through the transparent member; and a resonator which causes the emission light to resonate between the gain medium and the supersaturated absorber, with the transparent member being interposed therebetween. This laser device is configured such that the gain medium-side surface of the transparent member is coated to have a dielectric multilayer film that reflects the excitation light, while transmitting the emission light.
Inventors:
HIRANO GO (JP)
Application Number:
PCT/JP2019/042302
Publication Date:
July 02, 2020
Filing Date:
October 29, 2019
Export Citation:
Assignee:
SONY CORP (JP)
International Classes:
H01S3/0941; H01S3/113
Foreign References:
| JP2007214207A | 2007-08-23 | |||
| JP2017220652A | 2017-12-14 | |||
| JP2018073984A | 2018-05-10 | |||
| US6973115B1 | 2005-12-06 |
Attorney, Agent or Firm:
TANAKA Hidetetsu et al. (JP)
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