US 11,870,207 B1
Laser device
Fei Chen, Changchun (CN); Yi Chen, Changchun (CN); Junjie Sun, Changchun (CN); Jinghua Yu, Changchun (CN); Zhihuan Yao, Changchun (CN); Yang He, Changchun (CN); Kuo Zhang, Changchun (CN); and Deyang Yu, Changchun (CN)
Assigned to Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun (CN)
Filed by Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun (CN)
Filed on Aug. 7, 2023, as Appl. No. 18/366,537.
Claims priority of application No. 202211283070.3 (CN), filed on Oct. 20, 2022.
Int. Cl. H01S 3/08 (2023.01); H01S 3/081 (2006.01); H01S 3/16 (2006.01)
CPC H01S 3/0815 (2013.01) [H01S 3/0811 (2013.01); H01S 3/08059 (2013.01); H01S 3/1643 (2013.01); H01S 3/1698 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A laser device, comprising a gain medium, a zero-degree reflective mirror, a first retro-reflective mirror, a second retro-reflective mirror, and an output coupling mirror;
wherein the gain medium is located between the first retro-reflective mirror and the second retro-reflective mirror, and is configured to generate radiation light; the zero-degree reflective mirror has a common optical axis with the gain medium; the radiation light comprises first-direction radiation light and second-direction radiation light; the first-direction radiation light is configured to be incident on the first retro-reflective mirror; the second-direction radiation light is configured to be incident on the zero-degree reflective mirror, totally reflected by the zero-degree reflective mirror, incident on the gain medium, and incident on the first retro-reflective mirror to form incident light together with the first-direction radiation light;
wherein the first retro-reflective mirror and the zero-degree reflective mirror are located on opposite sides of the gain medium, and the first retro-reflective mirror is arranged in a vertical direction; the incident light is configured to be incident on the first retro-reflective mirror, and emitted after passing through the first retro-reflective mirror, so as to obtain first emitted light; a direction of the incident light is opposite to a direction of the first emitted light, and the incident light and the first emitted light are parallel to each other and spaced from each other in the vertical direction;
wherein the second retro-reflective mirror and the zero-degree reflective mirror are located on the same side of the gain medium, and the second retro-reflective mirror is arranged in the vertical direction; the first emitted light is configured to be incident on the second retro-reflective mirror, and emitted after passing through the second retro-reflective mirror, so as to obtain second emitted light; a direction of the second emitted light is opposite to the direction of the first emitted light, and the first emitted light and the second emitted light are parallel to each other and spaced from each other in the vertical direction; and
wherein a resonant cavity is formed between the zero-degree reflective mirror and the output coupling mirror; the second emitted light is configured to be incident on the output coupling mirror; the output coupling mirror is configured to transmit and output first partial radiation light, and reflect second partial radiation light; the first retro-reflective mirror and the second retro-reflective mirror are configured to be used in cooperation, so that the laser device passively supplements a deformation of an optical base plate caused by a change in an environmental parameter.