论文部分内容阅读
垂直腔面发射激光器的单模输出特性在光网络数据传输光互连、光存储和激光打印中有重要的应用。传统的氧化限制型垂直腔面发射半导体激光器由于串联电阻大、发热严重而很难工作在单模状态。二维光子晶体结构可以有效地控制垂直腔面发射激光器的横向模式,使器件工作在单模状态下。从理论上系统研究了光子晶体垂直腔面发射半导体激光器的单模条件,成功设计了一组单模光子晶体垂直腔面发射半导体激光器,并通过常规工艺制作出功率0.6mW、边模抑制比大于30dB、阈值电流4mA、远场发散角8.4°、不受电流注入影响的单模光子晶体垂直腔面发射半导体激光器。实验证明:光子晶体可有效地进行横模控制。
The single mode output characteristics of vertical cavity surface emitting lasers are important applications in optical network data transmission optical interconnects, optical storage and laser printing. Conventional oxidation-limiting vertical cavity surface-emitting semiconductor lasers are difficult to operate in a single-mode state because of their large series resistance, severe heating, and the like. Two-dimensional photonic crystal structure can effectively control the vertical cavity surface emitting lasers transverse mode, the device in the single-mode operation. A series of single-mode photonic crystal vertical cavity surface-emitting semiconductor lasers have been successfully designed theoretically and systematically. The power of 0.6mW and the side-mode suppression ratio are larger than 30dB, threshold current 4mA, far-field divergence angle of 8.4 °, single-mode photonic crystal vertical cavity surface-emitting semiconductor laser without current injection. Experimental results show that photonic crystals can effectively control transverse modes.