VCSEL with reticular electrode and larger emitting aperture and its optoelectronic characteristics

• 来源期刊: 中国光学快报(英文版)
• 学科: 工学
• 关键词: 垂直腔表面发射激光器 VCSEL 网状电极 光电特性 大孔径 光输出功率 不均匀性 注入电流
• 年，卷（期）: 2010,（8）
• 所属期刊栏目: Lasers and Laser Optics
• 页码范围: 773-775
• 页数: 3页
• 分类号: TN248 TQ123.2
• 语种: 英文

摘要

The enlargement of the emitting aperture is usually one of the important methods of increasing verticalcavity surface-emitting laser(VCSEL) optical output power.However,in a VCSEL with a larger aperture, the inhomogeneity in the injected current often causes inhomogeneous or even no emission.To solve this problem and to increase VCSEL output power,as well as to improve its thermal characteristics,we develop a new type of injected VCSEL with a larger aperture and a reticular electrode,where the conventional circular injection electrode of the P side is turned into a reticular one,and the heat sink is on the N side.The tests of the new VCSEL show an improvement in homogeneity in not only the injected current but also the emission intensity.The optical output power is also considerably increased,and the device optoelectronic performance is improved.