基本信息:
- 专利标题： 光振荡装置和记录装置
- 专利标题（英）：Light oscillation device and recording device
- 申请号：CN201110066921.4 申请日：2011-03-18
- 公开(公告)号：CN102201646A 公开(公告)日：2011-09-28
- 发明人： 藤田五郎 , 宫岛孝夫 , 渡边秀辉
- 申请人： 索尼公司
- 申请人地址： 日本东京
- 专利权人： 索尼公司
- 当前专利权人： 索尼公司
- 当前专利权人地址： 日本东京
- 代理机构： 北京康信知识产权代理有限责任公司
- 代理人： 余刚; 吴孟秋
- 优先权： 2010-070924 2010.03.25 JP
- 主分类号： H01S5/06
- IPC分类号： H01S5/06 ; H01S5/042 ; G11B7/08
The invention relates to a light oscillation device and a recording device. The light oscillation device has a self-oscillation semiconductor laser that has a double quantum well separated confinement heterostructure made of GaInN/GaN/AlGaN materials and that includes a saturable absorber section which is applied with a negative bias voltage and a gain section into which a gain current is injected, a light separation unit that separates a portion of laser light beams from the self oscillation semiconductor laser, a light sensing element that senses the laser light beams separated by the light separation unit, and a current control circuit which controls a current injected into the gain section of the self oscillation semiconductor laser based on an amount of the laser light beams which are sensed by the light sensing element.